100102212021 has 32 divisors (see below), whose sum is σ = 161778532608. Its totient is φ = 53746790400.

The previous prime is 100102212011. The next prime is 100102212031. The reversal of 100102212021 is 120212201001.

It is an interprime number because it is at equal distance from previous prime (100102212011) and next prime (100102212031).

It is not a de Polignac number, because 100102212021 - 2¹⁹ = 100101687733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100102211988 and 100102212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100102212011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18720 + ... + 447833.

It is an arithmetic number, because the mean of its divisors is an integer number (5055579144).

Almost surely, 2^100102212021 is an apocalyptic number.

It is an amenable number.

100102212021 is a deficient number, since it is larger than the sum of its proper divisors (61676320587).

100102212021 is a wasteful number, since it uses less digits than its factorization.

100102212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467181.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100102212021 its reverse (120212201001), we get a palindrome (220314413022).

The spelling of 100102212021 in words is "one hundred billion, one hundred two million, two hundred twelve thousand, twenty-one".