20002222021 has 8 divisors (see below), whose sum is σ = 20873301120. Its totient is φ = 19131261072.

The previous prime is 20002222007. The next prime is 20002222033. The reversal of 20002222021 is 12022220002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20002222021 - 2⁵ = 20002221989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002221992 and 20002222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002222061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630096 + ... + 661078.

It is an arithmetic number, because the mean of its divisors is an integer number (2609162640).

Almost surely, 2^20002222021 is an apocalyptic number.

It is an amenable number.

20002222021 is a deficient number, since it is larger than the sum of its proper divisors (871079099).

20002222021 is a wasteful number, since it uses less digits than its factorization.

20002222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59075.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20002222021 its reverse (12022220002), we get a palindrome (32024442023).

The spelling of 20002222021 in words is "twenty billion, two million, two hundred twenty-two thousand, twenty-one".