2121022111010 has 128 divisors (see below), whose sum is σ = 4564057881600. Its totient is φ = 700902604800.

The previous prime is 2121022110979. The next prime is 2121022111031. The reversal of 2121022111010 is 101112201212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7294391 + ... + 7579589.

It is an arithmetic number, because the mean of its divisors is an integer number (35656702200).

Almost surely, 2^{2121022111010} is an apocalyptic number.

2121022111010 is an abundant number, since it is smaller than the sum of its proper divisors (2443035770590).

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

2121022111010 is a wasteful number, since it uses less digits than its factorization.

2121022111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285372.

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

Adding to 2121022111010 its reverse (101112201212), we get a palindrome (2222134312222).

The spelling of 2121022111010 in words is "two trillion, one hundred twenty-one billion, twenty-two million, one hundred eleven thousand, ten".