20221420402100 has 72 divisors (see below), whose sum is σ = 44111837078400. Its totient is φ = 8045942129280.

The previous prime is 20221420402093. The next prime is 20221420402103. The reversal of 20221420402100 is 120402412202.

It is a super-2 number, since 2×20221420402100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221420402103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82123769 + ... + 82369631.

Almost surely, 2^{20221420402100} is an apocalyptic number.

20221420402100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221420402100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22055918539200).

20221420402100 is an abundant number, since it is smaller than the sum of its proper divisors (23890416676300).

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

20221420402100 is a wasteful number, since it uses less digits than its factorization.

20221420402100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250209 (or 250202 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20221420402100 its reverse (120402412202), we get a palindrome (20341822814302).

The spelling of 20221420402100 in words is "twenty trillion, two hundred twenty-one billion, four hundred twenty million, four hundred two thousand, one hundred".