20120121102010 has 64 divisors (see below), whose sum is σ = 37109432207232. Its totient is φ = 7850076788736.

The previous prime is 20120121101999. The next prime is 20120121102043. The reversal of 20120121102010 is 1020112102102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1876346509 + ... + 1876357231.

It is an arithmetic number, because the mean of its divisors is an integer number (579834878238).

Almost surely, 2^{20120121102010} is an apocalyptic number.

20120121102010 is a deficient number, since it is larger than the sum of its proper divisors (16989311105222).

20120121102010 is a wasteful number, since it uses less digits than its factorization.

20120121102010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16367.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120121102010 its reverse (1020112102102), we get a palindrome (21140233204112).

The spelling of 20120121102010 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, one hundred two thousand, ten".