21402222233020 has 24 divisors (see below), whose sum is σ = 44947756068768. Its totient is φ = 8560300440000.

The previous prime is 21402222233009. The next prime is 21402222233053. The reversal of 21402222233020 is 2033222220412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36480031 + ... + 37062070.

It is an arithmetic number, because the mean of its divisors is an integer number (1872823169532).

Almost surely, 2^{21402222233020} is an apocalyptic number.

21402222233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21402222233020 is an abundant number, since it is smaller than the sum of its proper divisors (23545533835748).

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

21402222233020 is a wasteful number, since it uses less digits than its factorization.

21402222233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73556661 (or 73556659 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21402222233020 its reverse (2033222220412), we get a palindrome (23435444453432).

The spelling of 21402222233020 in words is "twenty-one trillion, four hundred two billion, two hundred twenty-two million, two hundred thirty-three thousand, twenty".