210102121100 has 72 divisors (see below), whose sum is σ = 490922797680. Its totient is φ = 77756600320.

The previous prime is 210102121081. The next prime is 210102121129. The reversal of 210102121100 is 1121201012.

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, 947069 + ... + 1147668.

It is an arithmetic number, because the mean of its divisors is an integer number (6818372190).

Almost surely, 2^210102121100 is an apocalyptic number.

210102121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102121100 is an abundant number, since it is smaller than the sum of its proper divisors (280820676580).

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

210102121100 is a wasteful number, since it uses less digits than its factorization.

210102121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094827 (or 2094820 counting only the distinct ones).

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

Adding to 210102121100 its reverse (1121201012), we get a palindrome (211223322112).

The spelling of 210102121100 in words is "two hundred ten billion, one hundred two million, one hundred twenty-one thousand, one hundred".