21350121231498 has 128 divisors (see below), whose sum is σ = 45330591873024. Its totient is φ = 6695142854400.

The previous prime is 21350121231443. The next prime is 21350121231499. The reversal of 21350121231498 is 89413212105312.

It is a super-2 number, since 2×21350121231498² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21350121231499) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2775983833 + ... + 2775991523.

It is an arithmetic number, because the mean of its divisors is an integer number (354145249008).

Almost surely, 2^{21350121231498} is an apocalyptic number.

21350121231498 is an abundant number, since it is smaller than the sum of its proper divisors (23980470641526).

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

21350121231498 is a wasteful number, since it uses less digits than its factorization.

21350121231498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11180.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 21350121231498 in words is "twenty-one trillion, three hundred fifty billion, one hundred twenty-one million, two hundred thirty-one thousand, four hundred ninety-eight".