1202110110021 has 64 divisors (see below), whose sum is σ = 1879450110720. Its totient is φ = 678296125440.

The previous prime is 1202110109989. The next prime is 1202110110067. The reversal of 1202110110021 is 1200110112021.

It is not a de Polignac number, because 1202110110021 - 2⁵ = 1202110109989 is a prime.

It is a super-2 number, since 2×1202110110021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202110109979 and 1202110110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202110110521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1061085 + ... + 1878861.

It is an arithmetic number, because the mean of its divisors is an integer number (29366407980).

Almost surely, 2^{1202110110021} is an apocalyptic number.

It is an amenable number.

1202110110021 is a deficient number, since it is larger than the sum of its proper divisors (677340000699).

1202110110021 is a wasteful number, since it uses less digits than its factorization.

1202110110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817894.

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

Adding to 1202110110021 its reverse (1200110112021), we get a palindrome (2402220222042).

It can be divided in two parts, 1202110 and 110021, that added together give a palindrome (1312131).

The spelling of 1202110110021 in words is "one trillion, two hundred two billion, one hundred ten million, one hundred ten thousand, twenty-one".