1210021011021 has 32 divisors (see below), whose sum is σ = 1694595409920. Its totient is φ = 766944158400.

The previous prime is 1210021011019. The next prime is 1210021011103. The reversal of 1210021011021 is 1201101200121.

It is not a de Polignac number, because 1210021011021 - 2¹ = 1210021011019 is a prime.

It is a super-2 number, since 2×1210021011021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210021010988 and 1210021011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210021012021) 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, 4888776 + ... + 5130318.

It is an arithmetic number, because the mean of its divisors is an integer number (52956106560).

Almost surely, 2^{1210021011021} is an apocalyptic number.

It is an amenable number.

1210021011021 is a deficient number, since it is larger than the sum of its proper divisors (484574398899).

1210021011021 is a wasteful number, since it uses less digits than its factorization.

1210021011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242457.

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

Adding to 1210021011021 its reverse (1201101200121), we get a palindrome (2411122211142).

The spelling of 1210021011021 in words is "one trillion, two hundred ten billion, twenty-one million, eleven thousand, twenty-one".