1012100211021 has 16 divisors (see below), whose sum is σ = 1450714752000. Its totient is φ = 625620733488.

The previous prime is 1012100211011. The next prime is 1012100211029. The reversal of 1012100211021 is 1201120012101.

It is not a de Polignac number, because 1012100211021 - 2²² = 1012096016717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012100210988 and 1012100211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012100211029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188892471 + ... + 188897828.

It is an arithmetic number, because the mean of its divisors is an integer number (90669672000).

Almost surely, 2^{1012100211021} is an apocalyptic number.

It is an amenable number.

1012100211021 is a deficient number, since it is larger than the sum of its proper divisors (438614540979).

1012100211021 is a wasteful number, since it uses less digits than its factorization.

1012100211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377790368.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1012100211021 its reverse (1201120012101), we get a palindrome (2213220223122).

The spelling of 1012100211021 in words is "one trillion, twelve billion, one hundred million, two hundred eleven thousand, twenty-one".