1012102112021 has 32 divisors (see below), whose sum is σ = 1361880484608. Its totient is φ = 726392240640.

The previous prime is 1012102111987. The next prime is 1012102112023. The reversal of 1012102112021 is 1202112012101.

It is not a de Polignac number, because 1012102112021 - 2¹⁸ = 1012101849877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012102111987 and 1012102112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012102112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 648770 + ... + 1563683.

It is an arithmetic number, because the mean of its divisors is an integer number (42558765144).

Almost surely, 2^{1012102112021} is an apocalyptic number.

1012102112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012102112021 is a deficient number, since it is larger than the sum of its proper divisors (349778372587).

1012102112021 is a wasteful number, since it uses less digits than its factorization.

1012102112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212941.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012102112021 its reverse (1202112012101), we get a palindrome (2214214124122).

The spelling of 1012102112021 in words is "one trillion, twelve billion, one hundred two million, one hundred twelve thousand, twenty-one".