210121121012 has 24 divisors (see below), whose sum is σ = 401181668832. Its totient is φ = 95499756000.

The previous prime is 210121120967. The next prime is 210121121017.

210121121012 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194483 + ... + 676805.

It is an arithmetic number, because the mean of its divisors is an integer number (16715902868).

Almost surely, 2^210121121012 is an apocalyptic number.

210121121012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210121121012 is a deficient number, since it is larger than the sum of its proper divisors (191060547820).

210121121012 is a wasteful number, since it uses less digits than its factorization.

210121121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492239 (or 492237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

It can be divided in two parts, 210121 and 121012, that added together give a palindrome (331133).

The spelling of 210121121012 in words is "two hundred ten billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".