100021002122 has 16 divisors (see below), whose sum is σ = 152566568712. Its totient is φ = 49169802240.

The previous prime is 100021002113. The next prime is 100021002143. The reversal of 100021002122 is 221200120001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27017825641 + 73003176481 = 164371^2 + 270191^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034279 + ... + 1126842.

Almost surely, 2^100021002122 is an apocalyptic number.

100021002122 is a deficient number, since it is larger than the sum of its proper divisors (52545566590).

100021002122 is a wasteful number, since it uses less digits than its factorization.

100021002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161513.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100021002122 its reverse (221200120001), we get a palindrome (321221122123).

The spelling of 100021002122 in words is "one hundred billion, twenty-one million, two thousand, one hundred twenty-two".