122121011011220 has 24 divisors (see below), whose sum is σ = 276181363364424. Its totient is φ = 45090834834816.

The previous prime is 122121011011183. The next prime is 122121011011267. The reversal of 122121011011220 is 22110110121221.

It can be written as a sum of positive squares in 4 ways, for example, as 15041272942864 + 107079738068356 = 3878308^2 + 10347934^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234848097839 + ... + 234848098358.

It is an arithmetic number, because the mean of its divisors is an integer number (11507556806851).

Almost surely, 2^{122121011011220} is an apocalyptic number.

122121011011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121011011220 is an abundant number, since it is smaller than the sum of its proper divisors (154060352353204).

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

122121011011220 is a wasteful number, since it uses less digits than its factorization.

122121011011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469696196219 (or 469696196217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122121011011220 its reverse (22110110121221), we get a palindrome (144231121132441).

The spelling of 122121011011220 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, eleven million, eleven thousand, two hundred twenty".