22031232220100 has 54 divisors (see below), whose sum is σ = 50456404134234. Its totient is φ = 8348677459200.

The previous prime is 22031232220099. The next prime is 22031232220171. The reversal of 22031232220100 is 102223213022.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 319378698496 + 21711853521604 = 565136^2 + 4659598^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 305105621 + ... + 305177820.

Almost surely, 2^{22031232220100} is an apocalyptic number.

22031232220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031232220100 is an abundant number, since it is smaller than the sum of its proper divisors (28425171914134).

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

22031232220100 is a wasteful number, since it uses less digits than its factorization.

22031232220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610283493 (or 610283467 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22031232220100 its reverse (102223213022), we get a palindrome (22133455433122).

The spelling of 22031232220100 in words is "twenty-two trillion, thirty-one billion, two hundred thirty-two million, two hundred twenty thousand, one hundred".