22131120220402 has 8 divisors (see below), whose sum is σ = 33196851276012. Its totient is φ = 11065503128400.

The previous prime is 22131120220367. The next prime is 22131120220409. The reversal of 22131120220402 is 20402202113122.

It can be written as a sum of positive squares in 2 ways, for example, as 19369936474641 + 2761183745761 = 4401129^2 + 1661681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22131120220409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28003749 + ... + 28783192.

Almost surely, 2^{22131120220402} is an apocalyptic number.

22131120220402 is a deficient number, since it is larger than the sum of its proper divisors (11065731055610).

22131120220402 is a wasteful number, since it uses less digits than its factorization.

22131120220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56981804.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22131120220402 its reverse (20402202113122), we get a palindrome (42533322333524).

The spelling of 22131120220402 in words is "twenty-two trillion, one hundred thirty-one billion, one hundred twenty million, two hundred twenty thousand, four hundred two".