2121021011000 has 64 divisors (see below), whose sum is σ = 5011375711680. Its totient is φ = 840171388800.

The previous prime is 2121021010967. The next prime is 2121021011041. The reversal of 2121021011000 is 1101201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10193219 + ... + 10399218.

It is an arithmetic number, because the mean of its divisors is an integer number (78302745495).

Almost surely, 2^{2121021011000} is an apocalyptic number.

2121021011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121021011000 is an abundant number, since it is smaller than the sum of its proper divisors (2890354700680).

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

2121021011000 is a wasteful number, since it uses less digits than its factorization.

2121021011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20592561 (or 20592547 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2121021011000 its reverse (1101201212), we get a palindrome (2122122212212).

The spelling of 2121021011000 in words is "two trillion, one hundred twenty-one billion, twenty-one million, eleven thousand".