1021102222100 has 18 divisors (see below), whose sum is σ = 2215791822174. Its totient is φ = 408440888800.

The previous prime is 1021102222087. The next prime is 1021102222109. The reversal of 1021102222100 is 12222011201.

It can be written as a sum of positive squares in 3 ways, for example, as 91135156996 + 929967065104 = 301886^2 + 964348^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021102222109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5105511011 + ... + 5105511210.

Almost surely, 2^{1021102222100} is an apocalyptic number.

1021102222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021102222100 is an abundant number, since it is smaller than the sum of its proper divisors (1194689600074).

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

1021102222100 is a wasteful number, since it uses less digits than its factorization.

1021102222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211022235 (or 10211022228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021102222100 its reverse (12222011201), we get a palindrome (1033324233301).

The spelling of 1021102222100 in words is "one trillion, twenty-one billion, one hundred two million, two hundred twenty-two thousand, one hundred".