1012112102021 has 4 divisors (see below), whose sum is σ = 1033646402112. Its totient is φ = 990577801932.

The previous prime is 1012112102011. The next prime is 1012112102129. The reversal of 1012112102021 is 1202012112101.

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 1012112102021 - 2²² = 1012107907717 is a prime.

It is a super-2 number, since 2×1012112102021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012112101987 and 1012112102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10767149975 + ... + 10767150068.

It is an arithmetic number, because the mean of its divisors is an integer number (258411600528).

Almost surely, 2^{1012112102021} is an apocalyptic number.

It is an amenable number.

1012112102021 is a deficient number, since it is larger than the sum of its proper divisors (21534300091).

1012112102021 is an equidigital number, since it uses as much as digits as its factorization.

1012112102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21534300090.

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

Adding to 1012112102021 its reverse (1202012112101), we get a palindrome (2214124214122).

The spelling of 1012112102021 in words is "one trillion, twelve billion, one hundred twelve million, one hundred two thousand, twenty-one".