6121601001 has 20 divisors (see below), whose sum is σ = 9148742724. Its totient is φ = 4079224800.

The previous prime is 6121600987. The next prime is 6121601023. The reversal of 6121601001 is 1001061216.

6121601001 is a `hidden beast` number, since 61 + 2 + 1 + 601 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1487259225 + 4634341776 = 38565^2 + 68076^2 .

It is not a de Polignac number, because 6121601001 - 2¹⁴ = 6121584617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6121601081) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 176991 + ... + 208731.

Almost surely, 2^6121601001 is an apocalyptic number.

It is an amenable number.

6121601001 is a deficient number, since it is larger than the sum of its proper divisors (3027141723).

6121601001 is a wasteful number, since it uses less digits than its factorization.

6121601001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34134 (or 34125 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 6121601001 is about 78240.6607909212. The cubic root of 6121601001 is about 1829.3143440474.

Adding to 6121601001 its reverse (1001061216), we get a palindrome (7122662217).

It can be divided in two parts, 612 and 1601001, that added together give a cube (1601613 = 117³).

The spelling of 6121601001 in words is "six billion, one hundred twenty-one million, six hundred one thousand, one".