2120121201210 has 16 divisors (see below), whose sum is σ = 5088290882976. Its totient is φ = 565365653648.

The previous prime is 2120121201193. The next prime is 2120121201223. The reversal of 2120121201210 is 121021210212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2120121201210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35335353324 + ... + 35335353383.

It is an arithmetic number, because the mean of its divisors is an integer number (318018180186).

Almost surely, 2^{2120121201210} is an apocalyptic number.

2120121201210 is an abundant number, since it is smaller than the sum of its proper divisors (2968169681766).

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

2120121201210 is a wasteful number, since it uses less digits than its factorization.

2120121201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70670706717.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2120121201210 its reverse (121021210212), we get a palindrome (2241142411422).

The spelling of 2120121201210 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred ten".