222221099977 has 4 divisors (see below), whose sum is σ = 222259242256. Its totient is φ = 222182957700.

The previous prime is 222221099963. The next prime is 222221099993. The reversal of 222221099977 is 779990122222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222221099977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221099927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19062399 + ... + 19074052.

It is an arithmetic number, because the mean of its divisors is an integer number (55564810564).

Almost surely, 2^222221099977 is an apocalyptic number.

It is an amenable number.

222221099977 is a deficient number, since it is larger than the sum of its proper divisors (38142279).

222221099977 is an equidigital number, since it uses as much as digits as its factorization.

222221099977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38142278.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 222221099977 in words is "two hundred twenty-two billion, two hundred twenty-one million, ninety-nine thousand, nine hundred seventy-seven".