30888462792121 has 27 divisors (see below), whose sum is σ = 34608098198317. Its totient is φ = 27547711436960.

The previous prime is 30888462792101. The next prime is 30888462792221. The reversal of 30888462792121 is 12129726488803.

It is a happy number.

The square root of 30888462792121 is 5557739.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 546432902521 + 30342029889600 = 739211^2 + 5508360^2 .

It is not a de Polignac number, because 30888462792121 - 2¹⁹ = 30888462267833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30888462792121.

It is not an unprimeable number, because it can be changed into a prime (30888462792101) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3240157071 + ... + 3240166603.

Almost surely, 2^{30888462792121} is an apocalyptic number.

30888462792121 is the 5557739-th square number.

30888462792121 is the 2778870-th centered octagonal number.

It is an amenable number.

30888462792121 is a deficient number, since it is larger than the sum of its proper divisors (3719635406196).

30888462792121 is an frugal number, since it uses more digits than its factorization.

30888462792121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19194 (or 9597 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 30888462792121 in words is "thirty trillion, eight hundred eighty-eight billion, four hundred sixty-two million, seven hundred ninety-two thousand, one hundred twenty-one".