10122222100 has 36 divisors (see below), whose sum is σ = 22034581884. Its totient is φ = 4036103680.

The previous prime is 10122222073. The next prime is 10122222113. The reversal of 10122222100 is 122222101.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5098531216 + 5023690884 = 71404^2 + 70878^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127957 + ... + 191356.

It is an arithmetic number, because the mean of its divisors is an integer number (612071719).

Almost surely, 2^10122222100 is an apocalyptic number.

10122222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10122222100 is an abundant number, since it is smaller than the sum of its proper divisors (11912359784).

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

10122222100 is a wasteful number, since it uses less digits than its factorization.

10122222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319644 (or 319637 counting only the distinct ones).

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

Adding to 10122222100 its reverse (122222101), we get a palindrome (10244444201).

Subtracting from 10122222100 its reverse (122222101), we obtain a palindrome (9999999999).

The spelling of 10122222100 in words is "ten billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred".