1122222021220 has 48 divisors (see below), whose sum is σ = 2411617336128. Its totient is φ = 438423189120.

The previous prime is 1122222021209. The next prime is 1122222021259. The reversal of 1122222021220 is 221202222211.

It is a super-2 number, since 2×1122222021220² (a number of 25 digits) contains 22 as substring.

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, 20587842 + ... + 20642278.

It is an arithmetic number, because the mean of its divisors is an integer number (50242027836).

Almost surely, 2^{1122222021220} is an apocalyptic number.

1122222021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122222021220 is an abundant number, since it is smaller than the sum of its proper divisors (1289395314908).

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

1122222021220 is a wasteful number, since it uses less digits than its factorization.

1122222021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78460 (or 78458 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1122222021220 its reverse (221202222211), we get a palindrome (1343424243431).

The spelling of 1122222021220 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty".