1210210120100 has 36 divisors (see below), whose sum is σ = 2626222877124. Its totient is φ = 484071713280.

The previous prime is 1210210120087. The next prime is 1210210120129. The reversal of 1210210120100 is 10210120121.

It can be written as a sum of positive squares in 6 ways, for example, as 186325175716 + 1023884944384 = 431654^2 + 1011872^2 .

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, 4484192 + ... + 4746408.

Almost surely, 2^{1210210120100} is an apocalyptic number.

1210210120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210210120100 is an abundant number, since it is smaller than the sum of its proper divisors (1416012757024).

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

1210210120100 is a wasteful number, since it uses less digits than its factorization.

1210210120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308384 (or 308377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210210120100 its reverse (10210120121), we get a palindrome (1220420240221).

The spelling of 1210210120100 in words is "one trillion, two hundred ten billion, two hundred ten million, one hundred twenty thousand, one hundred".