20002212021 has 32 divisors (see below), whose sum is σ = 30112358400. Its totient is φ = 11698706880.

The previous prime is 20002212017. The next prime is 20002212023. The reversal of 20002212021 is 12021220002.

It is not a de Polignac number, because 20002212021 - 2² = 20002212017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002211988 and 20002212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002212023) 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, 2598240 + ... + 2605926.

It is an arithmetic number, because the mean of its divisors is an integer number (941011200).

Almost surely, 2^20002212021 is an apocalyptic number.

It is an amenable number.

20002212021 is a deficient number, since it is larger than the sum of its proper divisors (10110146379).

20002212021 is a wasteful number, since it uses less digits than its factorization.

20002212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20002212021 its reverse (12021220002), we get a palindrome (32023432023).

The spelling of 20002212021 in words is "twenty billion, two million, two hundred twelve thousand, twenty-one".