1022121011220 has 24 divisors (see below), whose sum is σ = 2861938831584. Its totient is φ = 272565602976.

The previous prime is 1022121011209. The next prime is 1022121011221. The reversal of 1022121011220 is 221101212201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1022121011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121011221) 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, 8517675034 + ... + 8517675153.

It is an arithmetic number, because the mean of its divisors is an integer number (119247451316).

Almost surely, 2^{1022121011220} is an apocalyptic number.

1022121011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121011220 is an abundant number, since it is smaller than the sum of its proper divisors (1839817820364).

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

1022121011220 is a wasteful number, since it uses less digits than its factorization.

1022121011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17035350199 (or 17035350197 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1022121011220 its reverse (221101212201), we get a palindrome (1243222223421).

The spelling of 1022121011220 in words is "one trillion, twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred twenty".