22211231000121 has 24 divisors (see below), whose sum is σ = 32379574673160. Its totient is φ = 14670575283456.

The previous prime is 22211231000009. The next prime is 22211231000129. The reversal of 22211231000121 is 12100013211222.

22211231000121 is a `hidden beast` number, since 2 + 221 + 12 + 310 + 0 + 0 + 121 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2303750231721 + 19907480768400 = 1517811^2 + 4461780^2 .

It is not a de Polignac number, because 22211231000121 - 2¹⁵ = 22211230967353 is a prime.

It is a super-2 number, since 2×22211231000121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22211231000094 and 22211231000103.

It is not an unprimeable number, because it can be changed into a prime (22211231000129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12834975 + ... + 14462331.

It is an arithmetic number, because the mean of its divisors is an integer number (1349148944715).

Almost surely, 2^{22211231000121} is an apocalyptic number.

It is an amenable number.

22211231000121 is a deficient number, since it is larger than the sum of its proper divisors (10168343673039).

22211231000121 is a wasteful number, since it uses less digits than its factorization.

22211231000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641385 (or 1641382 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22211231000121 its reverse (12100013211222), we get a palindrome (34311244211343).

The spelling of 22211231000121 in words is "twenty-two trillion, two hundred eleven billion, two hundred thirty-one million, one hundred twenty-one", and thus it is an aban number.