210121012010 has 128 divisors (see below), whose sum is σ = 503369717760. Its totient is φ = 61256208384.

The previous prime is 210121012007. The next prime is 210121012037. The reversal of 210121012010 is 10210121012.

It is a junction number, because it is equal to n+sod(n) for n = 210121011982 and 210121012000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 582596 + ... + 871584.

It is an arithmetic number, because the mean of its divisors is an integer number (3932575920).

Almost surely, 2^210121012010 is an apocalyptic number.

210121012010 is an abundant number, since it is smaller than the sum of its proper divisors (293248705750).

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

210121012010 is a wasteful number, since it uses less digits than its factorization.

210121012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289080.

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

Adding to 210121012010 its reverse (10210121012), we get a palindrome (220331133022).

The spelling of 210121012010 in words is "two hundred ten billion, one hundred twenty-one million, twelve thousand, ten".