100120203550251 has 12 divisors (see below), whose sum is σ = 144618216260128. Its totient is φ = 66746735690544.

The previous prime is 100120203550217. The next prime is 100120203550261. The reversal of 100120203550251 is 152055302021001.

100120203550251 is a `hidden beast` number, since 1 + 0 + 0 + 120 + 2 + 0 + 35 + 502 + 5 + 1 = 666.

It is not a de Polignac number, because 100120203550251 - 2¹³ = 100120203542059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120203550261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5011566 + ... + 15011868.

Almost surely, 2^{100120203550251} is an apocalyptic number.

100120203550251 is a deficient number, since it is larger than the sum of its proper divisors (44498012709877).

100120203550251 is a wasteful number, since it uses less digits than its factorization.

100120203550251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112722 (or 11112719 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 100120203550251 its reverse (152055302021001), we get a palindrome (252175505571252).

The spelling of 100120203550251 in words is "one hundred trillion, one hundred twenty billion, two hundred three million, five hundred fifty thousand, two hundred fifty-one".