100620545121 has 24 divisors (see below), whose sum is σ = 147074616000. Its totient is φ = 66282804000.

The previous prime is 100620545119. The next prime is 100620545131. The reversal of 100620545121 is 121545026001.

100620545121 is a `hidden beast` number, since 1 + 0 + 0 + 6 + 205 + 451 + 2 + 1 = 666.

It is not a de Polignac number, because 100620545121 - 2¹ = 100620545119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100620545131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342676 + ... + 564506.

It is an arithmetic number, because the mean of its divisors is an integer number (6128109000).

Almost surely, 2^100620545121 is an apocalyptic number.

It is an amenable number.

100620545121 is a deficient number, since it is larger than the sum of its proper divisors (46454070879).

100620545121 is a wasteful number, since it uses less digits than its factorization.

100620545121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222437 (or 222434 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 100620545121 in words is "one hundred billion, six hundred twenty million, five hundred forty-five thousand, one hundred twenty-one".