1012020101 has 8 divisors (see below), whose sum is σ = 1023172608. Its totient is φ = 1000890000.

The previous prime is 1012020091. The next prime is 1012020131. The reversal of 1012020101 is 1010202101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012020101 - 2²⁶ = 944911237 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 (1012020131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95036 + ... + 105146.

It is an arithmetic number, because the mean of its divisors is an integer number (127896576).

Almost surely, 2^1012020101 is an apocalyptic number.

It is an amenable number.

1012020101 is a deficient number, since it is larger than the sum of its proper divisors (11152507).

1012020101 is a wasteful number, since it uses less digits than its factorization.

1012020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1012020101 is about 31812.2633743656. The cubic root of 1012020101 is about 1003.9907530378.

Adding to 1012020101 its reverse (1010202101), we get a palindrome (2022222202).

It can be divided in two parts, 101 and 2020101, that added together give a palindrome (2020202).

The spelling of 1012020101 in words is "one billion, twelve million, twenty thousand, one hundred one".