7225121276661 has 8 divisors (see below), whose sum is σ = 9633507480064. Its totient is φ = 4816741295520.

The previous prime is 7225121276647. The next prime is 7225121276671. The reversal of 7225121276661 is 1666721215227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7225121276661 - 2²³ = 7225112888053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7225121276661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225121276671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515121 + ... + 5177481.

It is an arithmetic number, because the mean of its divisors is an integer number (1204188435008).

Almost surely, 2^{7225121276661} is an apocalyptic number.

It is an amenable number.

7225121276661 is a deficient number, since it is larger than the sum of its proper divisors (2408386203403).

7225121276661 is a wasteful number, since it uses less digits than its factorization.

7225121276661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111131.

The product of its digits is 846720, while the sum is 48.

The spelling of 7225121276661 in words is "seven trillion, two hundred twenty-five billion, one hundred twenty-one million, two hundred seventy-six thousand, six hundred sixty-one".