222100220012021 has 32 divisors (see below), whose sum is σ = 241816373568000. Its totient is φ = 202772548375488.

The previous prime is 222100220011993. The next prime is 222100220012059. The reversal of 222100220012021 is 120210022001222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-222100220012021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100220512021) 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, 527319650 + ... + 527740668.

It is an arithmetic number, because the mean of its divisors is an integer number (7556761674000).

Almost surely, 2^{222100220012021} is an apocalyptic number.

It is an amenable number.

222100220012021 is a deficient number, since it is larger than the sum of its proper divisors (19716153555979).

222100220012021 is a wasteful number, since it uses less digits than its factorization.

222100220012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422273.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222100220012021 its reverse (120210022001222), we get a palindrome (342310242013243).

The spelling of 222100220012021 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty million, twelve thousand, twenty-one".