222121031111 has 8 divisors (see below), whose sum is σ = 253855624704. Its totient is φ = 190387191960.

The previous prime is 222121031063. The next prime is 222121031131. The reversal of 222121031111 is 111130121222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222121031111 - 2²² = 222116836807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222121031111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121031131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761126 + ... + 1011708.

It is an arithmetic number, because the mean of its divisors is an integer number (31731953088).

Almost surely, 2^222121031111 is an apocalyptic number.

222121031111 is a deficient number, since it is larger than the sum of its proper divisors (31734593593).

222121031111 is a wasteful number, since it uses less digits than its factorization.

222121031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377221.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 222121031111 its reverse (111130121222), we get a palindrome (333251152333).

The spelling of 222121031111 in words is "two hundred twenty-two billion, one hundred twenty-one million, thirty-one thousand, one hundred eleven".