6961280121 has 24 divisors (see below), whose sum is σ = 10274309760. Its totient is φ = 4539818016.

The previous prime is 6961280111. The next prime is 6961280153. The reversal of 6961280121 is 1210821696.

It is not a de Polignac number, because 6961280121 - 2⁶ = 6961280057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6961280111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1373490 + ... + 1378548.

It is an arithmetic number, because the mean of its divisors is an integer number (428096240).

Almost surely, 2^6961280121 is an apocalyptic number.

It is an amenable number.

6961280121 is a deficient number, since it is larger than the sum of its proper divisors (3313029639).

6961280121 is a wasteful number, since it uses less digits than its factorization.

6961280121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8365 (or 8362 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 6961280121 is about 83434.2862437260. The cubic root of 6961280121 is about 1909.3975897785.

The spelling of 6961280121 in words is "six billion, nine hundred sixty-one million, two hundred eighty thousand, one hundred twenty-one".