210020001202120 has 16 divisors (see below), whose sum is σ = 472545002704860. Its totient is φ = 84008000480832.

The previous prime is 210020001202117. The next prime is 210020001202153. The reversal of 210020001202120 is 21202100020012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 204555842499204 + 5464158702916 = 14302302^2 + 2337554^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210020001202120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2625250014987 + ... + 2625250015066.

Almost surely, 2^{210020001202120} is an apocalyptic number.

210020001202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210020001202120 is an abundant number, since it is smaller than the sum of its proper divisors (262525001502740).

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

210020001202120 is a wasteful number, since it uses less digits than its factorization.

210020001202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250500030064 (or 5250500030060 counting only the distinct ones).

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

Adding to 210020001202120 its reverse (21202100020012), we get a palindrome (231222101222132).

The spelling of 210020001202120 in words is "two hundred ten trillion, twenty billion, one million, two hundred two thousand, one hundred twenty".