1111222212020 has 96 divisors (see below), whose sum is σ = 2498759625600. Its totient is φ = 413834918400.

The previous prime is 1111222211999. The next prime is 1111222212049. The reversal of 1111222212020 is 202122221111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111222212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117946910 + ... + 117956330.

It is an arithmetic number, because the mean of its divisors is an integer number (26028746100).

Almost surely, 2^{1111222212020} is an apocalyptic number.

1111222212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111222212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249379812800).

1111222212020 is an abundant number, since it is smaller than the sum of its proper divisors (1387537413580).

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

1111222212020 is a wasteful number, since it uses less digits than its factorization.

1111222212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14769 (or 14767 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1111222212020 its reverse (202122221111), we get a palindrome (1313344433131).

Subtracting from 1111222212020 its reverse (202122221111), we obtain a palindrome (909099990909).

The spelling of 1111222212020 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, twenty".