1021002222100 has 72 divisors (see below), whose sum is σ = 2532295700480. Its totient is φ = 350028846720.

The previous prime is 1021002222073. The next prime is 1021002222113. The reversal of 1021002222100 is 12222001201.

It is a happy number.

1021002222100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9443146 + ... + 9550654.

Almost surely, 2^{1021002222100} is an apocalyptic number.

1021002222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021002222100 is an abundant number, since it is smaller than the sum of its proper divisors (1511293478380).

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

1021002222100 is a wasteful number, since it uses less digits than its factorization.

1021002222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121097 (or 121090 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021002222100 its reverse (12222001201), we get a palindrome (1033224223301).

The spelling of 1021002222100 in words is "one trillion, twenty-one billion, two million, two hundred twenty-two thousand, one hundred".