1021010002200 has 72 divisors (see below), whose sum is σ = 3428891930100. Its totient is φ = 272269333440.

The previous prime is 1021010002189. The next prime is 1021010002261. The reversal of 1021010002200 is 22000101201.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1021010002200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 283612090 + ... + 283615689.

Almost surely, 2^{1021010002200} is an apocalyptic number.

1021010002200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021010002200 is an abundant number, since it is smaller than the sum of its proper divisors (2407881927900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021010002200 is a wasteful number, since it uses less digits than its factorization.

1021010002200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567227801 (or 567227789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1021010002200 its reverse (22000101201), we get a palindrome (1043010103401).

Subtracting from 1021010002200 its reverse (22000101201), we obtain a palindrome (999009900999).

The spelling of 1021010002200 in words is "one trillion, twenty-one billion, ten million, two thousand, two hundred".