12212110211021 has 32 divisors (see below), whose sum is σ = 14367077007360. Its totient is φ = 10162840032576.

The previous prime is 12212110211011. The next prime is 12212110211023. The reversal of 12212110211021 is 12011201121221.

It is not a de Polignac number, because 12212110211021 - 2²⁶ = 12212043102157 is a prime.

It is a super-2 number, since 2×12212110211021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212110211023) 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, 34760180 + ... + 35109746.

It is an arithmetic number, because the mean of its divisors is an integer number (448971156480).

Almost surely, 2^{12212110211021} is an apocalyptic number.

It is an amenable number.

12212110211021 is a deficient number, since it is larger than the sum of its proper divisors (2154966796339).

12212110211021 is a wasteful number, since it uses less digits than its factorization.

12212110211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350313.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12212110211021 its reverse (12011201121221), we get a palindrome (24223311332242).

The spelling of 12212110211021 in words is "twelve trillion, two hundred twelve billion, one hundred ten million, two hundred eleven thousand, twenty-one".