2155652052122 has 4 divisors (see below), whose sum is σ = 3233478078186. Its totient is φ = 1077826026060.

The previous prime is 2155652052121. The next prime is 2155652052133. The reversal of 2155652052122 is 2212502565512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2135657809321 + 19994242801 = 1461389^2 + 141401^2 .

It is not an unprimeable number, because it can be changed into a prime (2155652052121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538913013029 + ... + 538913013032.

Almost surely, 2^{2155652052122} is an apocalyptic number.

2155652052122 is a deficient number, since it is larger than the sum of its proper divisors (1077826026064).

2155652052122 is a wasteful number, since it uses less digits than its factorization.

2155652052122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077826026063.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 2155652052122 in words is "two trillion, one hundred fifty-five billion, six hundred fifty-two million, fifty-two thousand, one hundred twenty-two".