22221221101121 has 32 divisors (see below), whose sum is σ = 26074768355328. Its totient is φ = 18540487405440.

The previous prime is 22221221101103. The next prime is 22221221101159. The reversal of 22221221101121 is 12110112212222.

It is a de Polignac number, because none of the positive numbers 2^k-22221221101121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221221101093 and 22221221101102.

It is not an unprimeable number, because it can be changed into a prime (22221221107121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503734856 + ... + 503778966.

It is an arithmetic number, because the mean of its divisors is an integer number (814836511104).

Almost surely, 2^{22221221101121} is an apocalyptic number.

It is an amenable number.

22221221101121 is a deficient number, since it is larger than the sum of its proper divisors (3853547254207).

22221221101121 is a wasteful number, since it uses less digits than its factorization.

22221221101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49821.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22221221101121 its reverse (12110112212222), we get a palindrome (34331333313343).

The spelling of 22221221101121 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty-one".