2121022011000 has 64 divisors (see below), whose sum is σ = 6617588683680. Its totient is φ = 565605868800.

The previous prime is 2121022010953. The next prime is 2121022011007. The reversal of 2121022011000 is 1102201212.

It is a super-2 number, since 2×2121022011000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121022011007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353500669 + ... + 353506668.

Almost surely, 2^{2121022011000} is an apocalyptic number.

2121022011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121022011000 is an abundant number, since it is smaller than the sum of its proper divisors (4496566672680).

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

2121022011000 is a wasteful number, since it uses less digits than its factorization.

2121022011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707007361 (or 707007347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121022011000 its reverse (1102201212), we get a palindrome (2122124212212).

The spelling of 2121022011000 in words is "two trillion, one hundred twenty-one billion, twenty-two million, eleven thousand".