122221023220 has 12 divisors (see below), whose sum is σ = 256664148804. Its totient is φ = 48888409280.

The previous prime is 122221023217. The next prime is 122221023229. The reversal of 122221023220 is 22320122221.

It can be written as a sum of positive squares in 2 ways, for example, as 83344225636 + 38876797584 = 288694^2 + 197172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221023229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055525561 + ... + 3055525600.

It is an arithmetic number, because the mean of its divisors is an integer number (21388679067).

Almost surely, 2^122221023220 is an apocalyptic number.

122221023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221023220 is an abundant number, since it is smaller than the sum of its proper divisors (134443125584).

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

122221023220 is a wasteful number, since it uses less digits than its factorization.

122221023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111051170 (or 6111051168 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 122221023220 its reverse (22320122221), we get a palindrome (144541145441).

Subtracting from 122221023220 its reverse (22320122221), we obtain a palindrome (99900900999).

The spelling of 122221023220 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty-three thousand, two hundred twenty".