21130040022 has 32 divisors (see below), whose sum is σ = 52012407552. Its totient is φ = 5572757664.

The previous prime is 21130039999. The next prime is 21130040069. The reversal of 21130040022 is 22004003112.

It is a junction number, because it is equal to n+sod(n) for n = 21130039983 and 21130040010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19349308 + ... + 19350399.

It is an arithmetic number, because the mean of its divisors is an integer number (1625387736).

Almost surely, 2^21130040022 is an apocalyptic number.

21130040022 is an abundant number, since it is smaller than the sum of its proper divisors (30882367530).

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

21130040022 is a wasteful number, since it uses less digits than its factorization.

21130040022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38699732.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21130040022 its reverse (22004003112), we get a palindrome (43134043134).

The spelling of 21130040022 in words is "twenty-one billion, one hundred thirty million, forty thousand, twenty-two".