22100121012 has 24 divisors (see below), whose sum is σ = 51572810016. Its totient is φ = 7365869728.

The previous prime is 22100121011. The next prime is 22100121013. The reversal of 22100121012 is 21012100122.

It is an interprime number because it is at equal distance from previous prime (22100121011) and next prime (22100121013).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100121011) 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, 10378 + ... + 210494.

It is an arithmetic number, because the mean of its divisors is an integer number (2148867084).

Almost surely, 2^22100121012 is an apocalyptic number.

It is an amenable number.

22100121012 is an abundant number, since it is smaller than the sum of its proper divisors (29472689004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22100121012 is a wasteful number, since it uses less digits than its factorization.

22100121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209327 (or 209325 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22100121012 its reverse (21012100122), we get a palindrome (43112221134).

The spelling of 22100121012 in words is "twenty-two billion, one hundred million, one hundred twenty-one thousand, twelve".