2151213211164 has 24 divisors (see below), whose sum is σ = 5283681571840. Its totient is φ = 679330487664.

The previous prime is 2151213211141. The next prime is 2151213211207. The reversal of 2151213211164 is 4611123121512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4717572604 + ... + 4717573059.

Almost surely, 2^{2151213211164} is an apocalyptic number.

It is an amenable number.

2151213211164 is an abundant number, since it is smaller than the sum of its proper divisors (3132468360676).

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

2151213211164 is a wasteful number, since it uses less digits than its factorization.

2151213211164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9435145689 (or 9435145687 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

Adding to 2151213211164 its reverse (4611123121512), we get a palindrome (6762336332676).

The spelling of 2151213211164 in words is "two trillion, one hundred fifty-one billion, two hundred thirteen million, two hundred eleven thousand, one hundred sixty-four".