125520336121 has 8 divisors (see below), whose sum is σ = 126707349600. Its totient is φ = 124337247648.

The previous prime is 125520336113. The next prime is 125520336157. The reversal of 125520336121 is 121633025521.

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

It is a cyclic number.

It is not a de Polignac number, because 125520336121 - 2³ = 125520336113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125520336521) 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, 916971 + ... + 1044928.

It is an arithmetic number, because the mean of its divisors is an integer number (15838418700).

Almost surely, 2^125520336121 is an apocalyptic number.

It is an amenable number.

125520336121 is a deficient number, since it is larger than the sum of its proper divisors (1187013479).

125520336121 is a wasteful number, since it uses less digits than its factorization.

125520336121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962503.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 125520336121 in words is "one hundred twenty-five billion, five hundred twenty million, three hundred thirty-six thousand, one hundred twenty-one".