121302153025131 has 32 divisors (see below), whose sum is σ = 174436368666112. Its totient is φ = 74536589836800.

The previous prime is 121302153025129. The next prime is 121302153025159. The reversal of 121302153025131 is 131520351203121.

It is a happy number.

It is not a de Polignac number, because 121302153025131 - 2¹ = 121302153025129 is a prime.

It is a super-2 number, since 2×121302153025131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121302153025331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75982386 + ... + 77562408.

It is an arithmetic number, because the mean of its divisors is an integer number (5451136520816).

Almost surely, 2^{121302153025131} is an apocalyptic number.

121302153025131 is a deficient number, since it is larger than the sum of its proper divisors (53134215640981).

121302153025131 is a wasteful number, since it uses less digits than its factorization.

121302153025131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582963.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 121302153025131 in words is "one hundred twenty-one trillion, three hundred two billion, one hundred fifty-three million, twenty-five thousand, one hundred thirty-one".