20221201080 has 48 divisors (see below), whose sum is σ = 65718904680. Its totient is φ = 5392320192.

The previous prime is 20221201031. The next prime is 20221201081. The reversal of 20221201080 is 8010212202.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221201081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28084642 + ... + 28085361.

Almost surely, 2^20221201080 is an apocalyptic number.

20221201080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221201080 is an abundant number, since it is smaller than the sum of its proper divisors (45497703600).

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

20221201080 is a wasteful number, since it uses less digits than its factorization.

20221201080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56170020 (or 56170013 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20221201080 its reverse (8010212202), we get a palindrome (28231413282).

The spelling of 20221201080 in words is "twenty billion, two hundred twenty-one million, two hundred one thousand, eighty".