2152205122551 has 8 divisors (see below), whose sum is σ = 3130480178304. Its totient is φ = 1304366740920.

The previous prime is 2152205122519. The next prime is 2152205122583. The reversal of 2152205122551 is 1552215022512.

It is an interprime number because it is at equal distance from previous prime (2152205122519) and next prime (2152205122583).

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

It is not a de Polignac number, because 2152205122551 - 2⁵ = 2152205122519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 65218337047 = 2152205122551 / (2 + 1 + 5 + 2 + 2 + 0 + 5 + 1 + 2 + 2 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152205127551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32609168491 + ... + 32609168556.

It is an arithmetic number, because the mean of its divisors is an integer number (391310022288).

Almost surely, 2^{2152205122551} is an apocalyptic number.

2152205122551 is a deficient number, since it is larger than the sum of its proper divisors (978275055753).

2152205122551 is a wasteful number, since it uses less digits than its factorization.

2152205122551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65218337061.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 2152205122551 in words is "two trillion, one hundred fifty-two billion, two hundred five million, one hundred twenty-two thousand, five hundred fifty-one".