222222021112111 has 4 divisors (see below), whose sum is σ = 223385487191424. Its totient is φ = 221058555032800.

The previous prime is 222222021112103. The next prime is 222222021112153. The reversal of 222222021112111 is 111211120222222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222222021112111 - 2³ = 222222021112103 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 (222222021112711) 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, 581733039370 + ... + 581733039751.

It is an arithmetic number, because the mean of its divisors is an integer number (55846371797856).

Almost surely, 2^{222222021112111} is an apocalyptic number.

222222021112111 is a deficient number, since it is larger than the sum of its proper divisors (1163466079313).

222222021112111 is a wasteful number, since it uses less digits than its factorization.

222222021112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163466079312.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222222021112111 its reverse (111211120222222), we get a palindrome (333433141334333).

The spelling of 222222021112111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twenty-one million, one hundred twelve thousand, one hundred eleven".