221200221022 has 64 divisors (see below), whose sum is σ = 392216670720. Its totient is φ = 92542348800.

The previous prime is 221200221013. The next prime is 221200221023. The reversal of 221200221022 is 220122002122.

It is a junction number, because it is equal to n+sod(n) for n = 221200220987 and 221200221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200221023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1441429 + ... + 1587487.

It is an arithmetic number, because the mean of its divisors is an integer number (6128385480).

Almost surely, 2^221200221022 is an apocalyptic number.

221200221022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221200221022 is a deficient number, since it is larger than the sum of its proper divisors (171016449698).

221200221022 is a wasteful number, since it uses less digits than its factorization.

221200221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146209.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221200221022 its reverse (220122002122), we get a palindrome (441322223144).

The spelling of 221200221022 in words is "two hundred twenty-one billion, two hundred million, two hundred twenty-one thousand, twenty-two".