100212032421 has 6 divisors (see below), whose sum is σ = 144750713510. Its totient is φ = 66808021608.

The previous prime is 100212032413. The next prime is 100212032449. The reversal of 100212032421 is 124230212001.

It is a happy number.

100212032421 is a `hidden beast` number, since 1 + 0 + 0 + 212 + 0 + 32 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 80193744225 + 20018288196 = 283185^2 + 141486^2 .

It is not a de Polignac number, because 100212032421 - 2³ = 100212032413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100212032394 and 100212032403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212032461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5567335126 + ... + 5567335143.

Almost surely, 2^100212032421 is an apocalyptic number.

It is an amenable number.

100212032421 is a deficient number, since it is larger than the sum of its proper divisors (44538681089).

100212032421 is a wasteful number, since it uses less digits than its factorization.

100212032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11134670275 (or 11134670272 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100212032421 its reverse (124230212001), we get a palindrome (224442244422).

The spelling of 100212032421 in words is "one hundred billion, two hundred twelve million, thirty-two thousand, four hundred twenty-one".