222102001212021 has 96 divisors (see below), whose sum is σ = 395420075930880. Its totient is φ = 117283744972800.

The previous prime is 222102001212011. The next prime is 222102001212067. The reversal of 222102001212021 is 120212100201222.

It is a happy number.

222102001212021 is a `hidden beast` number, since 22 + 210 + 200 + 1 + 212 + 0 + 21 = 666.

It is not a de Polignac number, because 222102001212021 - 2¹³ = 222102001203829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222102001211985 and 222102001212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102001212011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 299637541 + ... + 300377861.

It is an arithmetic number, because the mean of its divisors is an integer number (4118959124280).

Almost surely, 2^{222102001212021} is an apocalyptic number.

222102001212021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222102001212021 is a deficient number, since it is larger than the sum of its proper divisors (173318074718859).

222102001212021 is a wasteful number, since it uses less digits than its factorization.

222102001212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746507 (or 746504 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222102001212021 its reverse (120212100201222), we get a palindrome (342314101413243).

The spelling of 222102001212021 in words is "two hundred twenty-two trillion, one hundred two billion, one million, two hundred twelve thousand, twenty-one".