1020122211220 has 24 divisors (see below), whose sum is σ = 2448293307264. Its totient is φ = 349756186656.

The previous prime is 1020122211211. The next prime is 1020122211247. The reversal of 1020122211220 is 221122210201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020122211194 and 1020122211203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3643293472 + ... + 3643293751.

It is an arithmetic number, because the mean of its divisors is an integer number (102012221136).

Almost surely, 2^{1020122211220} is an apocalyptic number.

1020122211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020122211220 is an abundant number, since it is smaller than the sum of its proper divisors (1428171096044).

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

1020122211220 is a wasteful number, since it uses less digits than its factorization.

1020122211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286587239 (or 7286587237 counting only the distinct ones).

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

Adding to 1020122211220 its reverse (221122210201), we get a palindrome (1241244421421).

The spelling of 1020122211220 in words is "one trillion, twenty billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twenty".