221021000119980 has 144 divisors (see below), whose sum is σ = 680171657124960. Its totient is φ = 58086870488064.

The previous prime is 221021000119901. The next prime is 221021000119981. The reversal of 221021000119980 is 89911000120122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (221021000119981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17551839 + ... + 27388118.

It is an arithmetic number, because the mean of its divisors is an integer number (4723414285590).

Almost surely, 2^{221021000119980} is an apocalyptic number.

221021000119980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221021000119980 is an abundant number, since it is smaller than the sum of its proper divisors (459150657004980).

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

221021000119980 is a wasteful number, since it uses less digits than its factorization.

221021000119980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44940368 (or 44940363 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 221021000119980 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred nineteen thousand, nine hundred eighty".