21154510260233 has 8 divisors (see below), whose sum is σ = 24177633170880. Its totient is φ = 18131649853680.

The previous prime is 21154510260229. The next prime is 21154510260241. The reversal of 21154510260233 is 33206201545112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21154510260233 - 2² = 21154510260229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21154510260193 and 21154510260202.

It is not an unprimeable number, because it can be changed into a prime (21154510260223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65453303 + ... + 65775708.

It is an arithmetic number, because the mean of its divisors is an integer number (3022204146360).

Almost surely, 2^{21154510260233} is an apocalyptic number.

It is an amenable number.

21154510260233 is a deficient number, since it is larger than the sum of its proper divisors (3023122910647).

21154510260233 is a wasteful number, since it uses less digits than its factorization.

21154510260233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131252047.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21154510260233 in words is "twenty-one trillion, one hundred fifty-four billion, five hundred ten million, two hundred sixty thousand, two hundred thirty-three".