221003032020220 has 48 divisors (see below), whose sum is σ = 509773584176640. Its totient is φ = 80107277507136.

The previous prime is 221003032020209. The next prime is 221003032020257. The reversal of 221003032020220 is 22020230300122.

It is a super-2 number, since 2×221003032020220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12643185312 + ... + 12643202791.

It is an arithmetic number, because the mean of its divisors is an integer number (10620283003680).

Almost surely, 2^{221003032020220} is an apocalyptic number.

221003032020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221003032020220 is an abundant number, since it is smaller than the sum of its proper divisors (288770552156420).

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

221003032020220 is a wasteful number, since it uses less digits than its factorization.

221003032020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25286388154 (or 25286388152 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 221003032020220 its reverse (22020230300122), we get a palindrome (243023262320342).

The spelling of 221003032020220 in words is "two hundred twenty-one trillion, three billion, thirty-two million, twenty thousand, two hundred twenty".