222001010021 has 32 divisors (see below), whose sum is σ = 271407628800. Its totient is φ = 177440440320.

The previous prime is 222001010017. The next prime is 222001010051. The reversal of 222001010021 is 120010100222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222001010021 - 2² = 222001010017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222001009984 and 222001010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001010051) 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, 9288875 + ... + 9312743.

It is an arithmetic number, because the mean of its divisors is an integer number (8481488400).

Almost surely, 2^222001010021 is an apocalyptic number.

It is an amenable number.

222001010021 is a deficient number, since it is larger than the sum of its proper divisors (49406618779).

222001010021 is a wasteful number, since it uses less digits than its factorization.

222001010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349.

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

Adding to 222001010021 its reverse (120010100222), we get a palindrome (342011110243).

The spelling of 222001010021 in words is "two hundred twenty-two billion, one million, ten thousand, twenty-one".