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2022012101 = 19931014557
BaseRepresentation
bin111100010000101…
…0111010011000101
312012220202212011002
41320201113103011
513120113341401
6532350423045
7101051551004
oct17041272305
95186685132
102022012101
1194841168a
12485201a85
13262bb3585
14152788c3b
15bc7aea6b
hex788574c5

2022012101 has 4 divisors (see below), whose sum is σ = 2023028652. Its totient is φ = 2020995552.

The previous prime is 2022012061. The next prime is 2022012127. The reversal of 2022012101 is 1012102202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1012102202 = 2506051101.

It can be written as a sum of positive squares in 2 ways, for example, as 937890625 + 1084121476 = 30625^2 + 32926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022012101 - 230 = 948270277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022012151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505286 + ... + 509271.

It is an arithmetic number, because the mean of its divisors is an integer number (505757163).

Almost surely, 22022012101 is an apocalyptic number.

It is an amenable number.

2022012101 is a deficient number, since it is larger than the sum of its proper divisors (1016551).

2022012101 is a wasteful number, since it uses less digits than its factorization.

2022012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016550.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2022012101 is about 44966.7888668960. The cubic root of 2022012101 is about 1264.5264468158.

Adding to 2022012101 its reverse (1012102202), we get a palindrome (3034114303).

The spelling of 2022012101 in words is "two billion, twenty-two million, twelve thousand, one hundred one".

Divisors: 1 1993 1014557 2022012101