222220211201121 has 32 divisors (see below), whose sum is σ = 338889717669888. Its totient is φ = 126882316267200.

The previous prime is 222220211201099. The next prime is 222220211201167. The reversal of 222220211201121 is 121102112022222.

It is not a de Polignac number, because 222220211201121 - 2⁷ = 222220211200993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222220211200121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1629984660 + ... + 1630120986.

It is an arithmetic number, because the mean of its divisors is an integer number (10590303677184).

Almost surely, 2^{222220211201121} is an apocalyptic number.

222220211201121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222220211201121 is a deficient number, since it is larger than the sum of its proper divisors (116669506468767).

222220211201121 is a wasteful number, since it uses less digits than its factorization.

222220211201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197301.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222220211201121 its reverse (121102112022222), we get a palindrome (343322323223343).

The spelling of 222220211201121 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, one hundred twenty-one".