1121144400220 has 24 divisors (see below), whose sum is σ = 2535511182624. Its totient is φ = 413961009216.

The previous prime is 1121144400161. The next prime is 1121144400223. The reversal of 1121144400220 is 220044411211.

It is a super-2 number, since 2×1121144400220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121144400191 and 1121144400200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121144400223) 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, 2156046664 + ... + 2156047183.

It is an arithmetic number, because the mean of its divisors is an integer number (105646299276).

Almost surely, 2^{1121144400220} is an apocalyptic number.

1121144400220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121144400220 is an abundant number, since it is smaller than the sum of its proper divisors (1414366782404).

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

1121144400220 is a wasteful number, since it uses less digits than its factorization.

1121144400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312093869 (or 4312093867 counting only the distinct ones).

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

Adding to 1121144400220 its reverse (220044411211), we get a palindrome (1341188811431).

The spelling of 1121144400220 in words is "one trillion, one hundred twenty-one billion, one hundred forty-four million, four hundred thousand, two hundred twenty".