100000051021 has 16 divisors (see below), whose sum is σ = 110150853120. Its totient is φ = 90218554560.

The previous prime is 100000051003. The next prime is 100000051043. The reversal of 100000051021 is 120150000001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100000051021 - 2¹⁷ = 99999919949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100000050989 and 100000051007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000051091) 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, 244125 + ... + 509506.

It is an arithmetic number, because the mean of its divisors is an integer number (6884428320).

Almost surely, 2^100000051021 is an apocalyptic number.

It is an amenable number.

100000051021 is a deficient number, since it is larger than the sum of its proper divisors (10150802099).

100000051021 is a wasteful number, since it uses less digits than its factorization.

100000051021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753876.

The product of its (nonzero) digits is 10, while the sum is 10.

Adding to 100000051021 its reverse (120150000001), we get a palindrome (220150051022).

The spelling of 100000051021 in words is "one hundred billion, fifty-one thousand, twenty-one".