21120860212950 has 48 divisors (see below), whose sum is σ = 53597866677696. Its totient is φ = 5501247309600.

The previous prime is 21120860212909. The next prime is 21120860212973. The reversal of 21120860212950 is 5921206802112.

It is a super-2 number, since 2×21120860212950² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120860212899 and 21120860212908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1637269536 + ... + 1637282435.

It is an arithmetic number, because the mean of its divisors is an integer number (1116622222452).

Almost surely, 2^{21120860212950} is an apocalyptic number.

21120860212950 is an abundant number, since it is smaller than the sum of its proper divisors (32477006464746).

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

21120860212950 is a wasteful number, since it uses less digits than its factorization.

21120860212950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274552029 (or 3274552024 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 21120860212950 in words is "twenty-one trillion, one hundred twenty billion, eight hundred sixty million, two hundred twelve thousand, nine hundred fifty".