21253042102151 has 8 divisors (see below), whose sum is σ = 21283448424000. Its totient is φ = 21222641932128.

The previous prime is 21253042102133. The next prime is 21253042102199. The reversal of 21253042102151 is 15120124035212.

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 21253042102151 - 2²² = 21253037907847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21253042102051) 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, 5398850 + ... + 8464848.

It is an arithmetic number, because the mean of its divisors is an integer number (2660431053000).

Almost surely, 2^{21253042102151} is an apocalyptic number.

21253042102151 is a deficient number, since it is larger than the sum of its proper divisors (30406321849).

21253042102151 is an equidigital number, since it uses as much as digits as its factorization.

21253042102151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075913.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 21253042102151 its reverse (15120124035212), we get a palindrome (36373166137363).

The spelling of 21253042102151 in words is "twenty-one trillion, two hundred fifty-three billion, forty-two million, one hundred two thousand, one hundred fifty-one".