1656600101121 has 48 divisors (see below), whose sum is σ = 2648090860800. Its totient is φ = 917961623712.

The previous prime is 1656600101089. The next prime is 1656600101137. The reversal of 1656600101121 is 1211010066561.

It is not a de Polignac number, because 1656600101121 - 2⁵ = 1656600101089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1656600101021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64111 + ... + 1821348.

It is an arithmetic number, because the mean of its divisors is an integer number (55168559600).

Almost surely, 2^{1656600101121} is an apocalyptic number.

It is an amenable number.

1656600101121 is a deficient number, since it is larger than the sum of its proper divisors (991490759679).

1656600101121 is a wasteful number, since it uses less digits than its factorization.

1656600101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885658 (or 1885651 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

Adding to 1656600101121 its reverse (1211010066561), we get a palindrome (2867610167682).

The spelling of 1656600101121 in words is "one trillion, six hundred fifty-six billion, six hundred million, one hundred one thousand, one hundred twenty-one".