2121100121010 has 96 divisors (see below), whose sum is σ = 5512889522880. Its totient is φ = 522065865984.

The previous prime is 2121100120999. The next prime is 2121100121027. The reversal of 2121100121010 is 101210011212.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99914017 + ... + 99935243.

It is an arithmetic number, because the mean of its divisors is an integer number (57425932530).

Almost surely, 2^{2121100121010} is an apocalyptic number.

2121100121010 is an abundant number, since it is smaller than the sum of its proper divisors (3391789401870).

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

2121100121010 is a wasteful number, since it uses less digits than its factorization.

2121100121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40972 (or 40959 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2121100121010 its reverse (101210011212), we get a palindrome (2222310132222).

The spelling of 2121100121010 in words is "two trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, ten".