1122012201220 has 24 divisors (see below), whose sum is σ = 2363217404184. Its totient is φ = 447473112576.

The previous prime is 1122012201173. The next prime is 1122012201251. The reversal of 1122012201220 is 221022102211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 217409577984 + 904602623236 = 466272^2 + 951106^2 .

It is a super-2 number, since 2×1122012201220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1122012201194 and 1122012201203.

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, 83228587 + ... + 83242066.

It is an arithmetic number, because the mean of its divisors is an integer number (98467391841).

Almost surely, 2^{1122012201220} is an apocalyptic number.

1122012201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122012201220 is an abundant number, since it is smaller than the sum of its proper divisors (1241205202964).

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

1122012201220 is a wasteful number, since it uses less digits than its factorization.

1122012201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166470999 (or 166470997 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1122012201220 its reverse (221022102211), we get a palindrome (1343034303431).

Subtracting from 1122012201220 its reverse (221022102211), we obtain a palindrome (900990099009).

The spelling of 1122012201220 in words is "one trillion, one hundred twenty-two billion, twelve million, two hundred one thousand, two hundred twenty".