222121668867 has 12 divisors (see below), whose sum is σ = 344515241736. Its totient is φ = 126926667840.

The previous prime is 222121668787. The next prime is 222121668889. The reversal of 222121668867 is 768866121222.

It is not a de Polignac number, because 222121668867 - 2¹⁸ = 222121406723 is a prime.

It is a super-2 number, since 2×222121668867² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222121663867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755515734 + ... + 755516027.

It is an arithmetic number, because the mean of its divisors is an integer number (28709603478).

Almost surely, 2^222121668867 is an apocalyptic number.

222121668867 is a deficient number, since it is larger than the sum of its proper divisors (122393572869).

222121668867 is a wasteful number, since it uses less digits than its factorization.

222121668867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511031778 (or 1511031771 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 222121668867 in words is "two hundred twenty-two billion, one hundred twenty-one million, six hundred sixty-eight thousand, eight hundred sixty-seven".