1210022110021 has 4 divisors (see below), whose sum is σ = 1249055081344. Its totient is φ = 1170989138700.

The previous prime is 1210022109983. The next prime is 1210022110051. The reversal of 1210022110021 is 1200112200121.

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 1210022110021 - 2²⁷ = 1209887892293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210022109983 and 1210022110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210022110051) 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, 19516485615 + ... + 19516485676.

It is an arithmetic number, because the mean of its divisors is an integer number (312263770336).

Almost surely, 2^{1210022110021} is an apocalyptic number.

It is an amenable number.

1210022110021 is a deficient number, since it is larger than the sum of its proper divisors (39032971323).

1210022110021 is an equidigital number, since it uses as much as digits as its factorization.

1210022110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39032971322.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210022110021 its reverse (1200112200121), we get a palindrome (2410134310142).

The spelling of 1210022110021 in words is "one trillion, two hundred ten billion, twenty-two million, one hundred ten thousand, twenty-one".