22211211111020 has 48 divisors (see below), whose sum is σ = 49548152031840. Its totient is φ = 8334630319104.

The previous prime is 22211211111007. The next prime is 22211211111053. The reversal of 22211211111020 is 2011111211222.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22211211111020.

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, 106291535 + ... + 106500294.

It is an arithmetic number, because the mean of its divisors is an integer number (1032253167330).

Almost surely, 2^{22211211111020} is an apocalyptic number.

22211211111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211211111020 is an abundant number, since it is smaller than the sum of its proper divisors (27336940920820).

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

22211211111020 is a wasteful number, since it uses less digits than its factorization.

22211211111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212792162 (or 212792160 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22211211111020 its reverse (2011111211222), we get a palindrome (24222322322242).

The spelling of 22211211111020 in words is "twenty-two trillion, two hundred eleven billion, two hundred eleven million, one hundred eleven thousand, twenty".