1012102111021 has 4 divisors (see below), whose sum is σ = 1065370643200. Its totient is φ = 958833578844.

The previous prime is 1012102111001. The next prime is 1012102111051. The reversal of 1012102111021 is 1201112012101.

It is a happy number.

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 1012102111021 - 2⁷ = 1012102110893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012102110992 and 1012102111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012102111001) 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, 26634266061 + ... + 26634266098.

It is an arithmetic number, because the mean of its divisors is an integer number (266342660800).

Almost surely, 2^{1012102111021} is an apocalyptic number.

It is an amenable number.

1012102111021 is a deficient number, since it is larger than the sum of its proper divisors (53268532179).

1012102111021 is an equidigital number, since it uses as much as digits as its factorization.

1012102111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53268532178.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012102111021 its reverse (1201112012101), we get a palindrome (2213214123122).

The spelling of 1012102111021 in words is "one trillion, twelve billion, one hundred two million, one hundred eleven thousand, twenty-one".