22012010021 has 8 divisors (see below), whose sum is σ = 22362757440. Its totient is φ = 21661915968.

The previous prime is 22012010011. The next prime is 22012010029. The reversal of 22012010021 is 12001021022.

It is a happy number.

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 22012010021 - 2²² = 22007815717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012009984 and 22012010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012010029) 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, 95201 + ... + 230406.

It is an arithmetic number, because the mean of its divisors is an integer number (2795344680).

Almost surely, 2^22012010021 is an apocalyptic number.

It is an amenable number.

22012010021 is a deficient number, since it is larger than the sum of its proper divisors (350747419).

22012010021 is a wasteful number, since it uses less digits than its factorization.

22012010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326683.

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

Adding to 22012010021 its reverse (12001021022), we get a palindrome (34013031043).

The spelling of 22012010021 in words is "twenty-two billion, twelve million, ten thousand, twenty-one".