10122111111021 has 64 divisors (see below), whose sum is σ = 16705346273280. Its totient is φ = 5308721429760.

The previous prime is 10122111111019. The next prime is 10122111111037. The reversal of 10122111111021 is 12011111122101.

It is not a de Polignac number, because 10122111111021 - 2¹ = 10122111111019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122111111011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115348600 + ... + 115436318.

It is an arithmetic number, because the mean of its divisors is an integer number (261021035520).

Almost surely, 2^{10122111111021} is an apocalyptic number.

It is an amenable number.

10122111111021 is a deficient number, since it is larger than the sum of its proper divisors (6583235162259).

10122111111021 is a wasteful number, since it uses less digits than its factorization.

10122111111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90146.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10122111111021 its reverse (12011111122101), we get a palindrome (22133222233122).

It can be divided in two parts, 101 and 22111111021, that added together give a palindrome (22111111122).

The spelling of 10122111111021 in words is "ten trillion, one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, twenty-one".