621025541121 has 16 divisors (see below), whose sum is σ = 838554105600. Its totient is φ = 408757484928.

The previous prime is 621025541117. The next prime is 621025541131. The reversal of 621025541121 is 121145520126.

It is not a de Polignac number, because 621025541121 - 2² = 621025541117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (621025541131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6686815 + ... + 6779051.

It is an arithmetic number, because the mean of its divisors is an integer number (52409631600).

Almost surely, 2^621025541121 is an apocalyptic number.

It is an amenable number.

621025541121 is a deficient number, since it is larger than the sum of its proper divisors (217528564479).

621025541121 is a wasteful number, since it uses less digits than its factorization.

621025541121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120728.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 621025541121 in words is "six hundred twenty-one billion, twenty-five million, five hundred forty-one thousand, one hundred twenty-one".