Search a number
-
+
2021222211101 = 2858237071587
BaseRepresentation
bin11101011010011010001…
…110110101111000011101
321011020010110011212122122
4131122122032311320131
5231103430341223401
64144311530352325
7266012525215442
oct35323216657035
97136113155578
102021222211101
1170a217277125
1228788728b6a5
131187a620c132
146db832079c9
153789b1c021b
hex1d69a3b5e1d

2021222211101 has 4 divisors (see below), whose sum is σ = 2021229568512. Its totient is φ = 2021214853692.

The previous prime is 2021222211089. The next prime is 2021222211181. The reversal of 2021222211101 is 1011122221202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021222211101 - 230 = 2020148469277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021222211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222211181) 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, 3249971 + ... + 3821616.

It is an arithmetic number, because the mean of its divisors is an integer number (505307392128).

Almost surely, 22021222211101 is an apocalyptic number.

It is an amenable number.

2021222211101 is a deficient number, since it is larger than the sum of its proper divisors (7357411).

2021222211101 is an equidigital number, since it uses as much as digits as its factorization.

2021222211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357410.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021222211101 its reverse (1011122221202), we get a palindrome (3032344432303).

The spelling of 2021222211101 in words is "two trillion, twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred one".

Divisors: 1 285823 7071587 2021222211101