221221101233022 has 64 divisors (see below), whose sum is σ = 487356790362624. Its totient is φ = 66384968970240.

The previous prime is 221221101232889. The next prime is 221221101233029. The reversal of 221221101233022 is 220332101122122.

It is a junction number, because it is equal to n+sod(n) for n = 221221101232983 and 221221101233001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221101233029) 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, 653370078 + ... + 653708574.

It is an arithmetic number, because the mean of its divisors is an integer number (7614949849416).

Almost surely, 2^{221221101233022} is an apocalyptic number.

221221101233022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221221101233022 is an abundant number, since it is smaller than the sum of its proper divisors (266135689129602).

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

221221101233022 is a wasteful number, since it uses less digits than its factorization.

221221101233022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434753.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 221221101233022 its reverse (220332101122122), we get a palindrome (441553202355144).

The spelling of 221221101233022 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred one million, two hundred thirty-three thousand, twenty-two".