22021431102 has 48 divisors (see below), whose sum is σ = 52528235760. Its totient is φ = 6611932800.

The previous prime is 22021431077. The next prime is 22021431127. The reversal of 22021431102 is 20113412022.

It is a happy number.

22021431102 is a `hidden beast` number, since 220 + 2 + 1 + 431 + 10 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (22021431077) and next prime (22021431127).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 488599 + ... + 531762.

It is an arithmetic number, because the mean of its divisors is an integer number (1094338245).

Almost surely, 2^22021431102 is an apocalyptic number.

22021431102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22021431102 is an abundant number, since it is smaller than the sum of its proper divisors (30506804658).

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

22021431102 is a wasteful number, since it uses less digits than its factorization.

22021431102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020489 (or 1020486 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22021431102 its reverse (20113412022), we get a palindrome (42134843124).

The spelling of 22021431102 in words is "twenty-two billion, twenty-one million, four hundred thirty-one thousand, one hundred two".