1210112001021 has 32 divisors (see below), whose sum is σ = 2026970643456. Its totient is φ = 623830896000.

The previous prime is 1210112001013. The next prime is 1210112001047. The reversal of 1210112001021 is 1201002110121.

It is not a de Polignac number, because 1210112001021 - 2³ = 1210112001013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210112000988 and 1210112001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210112006021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19964320 + ... + 20024841.

It is an arithmetic number, because the mean of its divisors is an integer number (63342832608).

Almost surely, 2^{1210112001021} is an apocalyptic number.

1210112001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210112001021 is a deficient number, since it is larger than the sum of its proper divisors (816858642435).

1210112001021 is a wasteful number, since it uses less digits than its factorization.

1210112001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39989313.

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

Adding to 1210112001021 its reverse (1201002110121), we get a palindrome (2411114111142).

The spelling of 1210112001021 in words is "one trillion, two hundred ten billion, one hundred twelve million, one thousand, twenty-one".