21023220012030 has 24 divisors (see below), whose sum is σ = 54660372031512. Its totient is φ = 5606192003184.

The previous prime is 21023220011971. The next prime is 21023220012049. The reversal of 21023220012030 is 3021002232012.

21023220012030 is a `hidden beast` number, since 210 + 232 + 20 + 0 + 1 + 203 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21023220011994 and 21023220012012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116795666644 + ... + 116795666823.

It is an arithmetic number, because the mean of its divisors is an integer number (2277515501313).

Almost surely, 2^{21023220012030} is an apocalyptic number.

21023220012030 is an abundant number, since it is smaller than the sum of its proper divisors (33637152019482).

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

21023220012030 is a wasteful number, since it uses less digits than its factorization.

21023220012030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233591333480 (or 233591333477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21023220012030 its reverse (3021002232012), we get a palindrome (24044222244042).

The spelling of 21023220012030 in words is "twenty-one trillion, twenty-three billion, two hundred twenty million, twelve thousand, thirty".