2121102000120 has 64 divisors (see below), whose sum is σ = 6582730356000. Its totient is φ = 546122812928.

The previous prime is 2121102000109. The next prime is 2121102000131. The reversal of 2121102000120 is 210002011212.

It is an interprime number because it is at equal distance from previous prime (2121102000109) and next prime (2121102000131).

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

It is a junction number, because it is equal to n+sod(n) for n = 2121102000096 and 2121102000105.

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, 304752555 + ... + 304759514.

Almost surely, 2^{2121102000120} is an apocalyptic number.

2121102000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121102000120 is an abundant number, since it is smaller than the sum of its proper divisors (4461628355880).

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

2121102000120 is a wasteful number, since it uses less digits than its factorization.

2121102000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609512112 (or 609512108 counting only the distinct ones).

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

Adding to 2121102000120 its reverse (210002011212), we get a palindrome (2331104011332).

The spelling of 2121102000120 in words is "two trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty", and thus it is an aban number.