122111221212220 has 12 divisors (see below), whose sum is σ = 256433564545704. Its totient is φ = 48844488484880.

The previous prime is 122111221212131. The next prime is 122111221212257. The reversal of 122111221212220 is 22212122111221.

It is a super-2 number, since 2×122111221212220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111221212191 and 122111221212200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052780530286 + ... + 3052780530325.

It is an arithmetic number, because the mean of its divisors is an integer number (21369463712142).

Almost surely, 2^{122111221212220} is an apocalyptic number.

122111221212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111221212220 is an abundant number, since it is smaller than the sum of its proper divisors (134322343333484).

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

122111221212220 is a wasteful number, since it uses less digits than its factorization.

122111221212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105561060620 (or 6105561060618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122111221212220 its reverse (22212122111221), we get a palindrome (144323343323441).

The spelling of 122111221212220 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty".