122121000111220 has 48 divisors (see below), whose sum is σ = 279807756959808. Its totient is φ = 44401343132160.

The previous prime is 122121000111217. The next prime is 122121000111251. The reversal of 122121000111220 is 22111000121221.

It is a junction number, because it is equal to n+sod(n) for n = 122121000111194 and 122121000111203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37776882 + ... + 40881961.

It is an arithmetic number, because the mean of its divisors is an integer number (5829328269996).

Almost surely, 2^{122121000111220} is an apocalyptic number.

122121000111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121000111220 is an abundant number, since it is smaller than the sum of its proper divisors (157686756848588).

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

122121000111220 is a wasteful number, since it uses less digits than its factorization.

122121000111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78665920 (or 78665918 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122121000111220 its reverse (22111000121221), we get a palindrome (144232000232441).

It can be divided in two parts, 1221210001 and 11220, that added together give a palindrome (1221221221).

The spelling of 122121000111220 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven thousand, two hundred twenty".