222000121000021 has 8 divisors (see below), whose sum is σ = 273230918153984. Its totient is φ = 175648447384560.

The previous prime is 222000120999949. The next prime is 222000121000081. The reversal of 222000121000021 is 120000121000222.

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 222000121000021 - 2¹³ = 222000120991829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 222000120999965 and 222000121000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000121000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219780884525 + ... + 1219780884706.

It is an arithmetic number, because the mean of its divisors is an integer number (34153864769248).

Almost surely, 2^{222000121000021} is an apocalyptic number.

It is an amenable number.

222000121000021 is a deficient number, since it is larger than the sum of its proper divisors (51230797153963).

222000121000021 is a wasteful number, since it uses less digits than its factorization.

222000121000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439561769251.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222000121000021 its reverse (120000121000222), we get a palindrome (342000242000243).

The spelling of 222000121000021 in words is "two hundred twenty-two trillion, one hundred twenty-one million, twenty-one", and thus it is an aban number.