122211220212220 has 24 divisors (see below), whose sum is σ = 258343188693408. Its totient is φ = 48560749752000.

The previous prime is 122211220212187. The next prime is 122211220212227. The reversal of 122211220212220 is 22212022112221.

It is a junction number, because it is equal to n+sod(n) for n = 122211220212191 and 122211220212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211220212227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20233642711 + ... + 20233648750.

It is an arithmetic number, because the mean of its divisors is an integer number (10764299528892).

Almost surely, 2^{122211220212220} is an apocalyptic number.

122211220212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122211220212220 is an abundant number, since it is smaller than the sum of its proper divisors (136131968481188).

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

122211220212220 is a wasteful number, since it uses less digits than its factorization.

122211220212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40467291621 (or 40467291619 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 122211220212220 its reverse (22212022112221), we get a palindrome (144423242324441).

The spelling of 122211220212220 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty".