1022111220100 has 18 divisors (see below), whose sum is σ = 2217981347834. Its totient is φ = 408844488000.

The previous prime is 1022111220083. The next prime is 1022111220103. The reversal of 1022111220100 is 10221112201.

1022111220100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10541950276 + 1011569269824 = 102674^2 + 1005768^2 .

It is a super-2 number, since 2×1022111220100² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1022111220103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5110556001 + ... + 5110556200.

Almost surely, 2^{1022111220100} is an apocalyptic number.

1022111220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022111220100 is an abundant number, since it is smaller than the sum of its proper divisors (1195870127734).

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

1022111220100 is a wasteful number, since it uses less digits than its factorization.

1022111220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221112215 (or 10221112208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1022111220100 its reverse (10221112201), we get a palindrome (1032332332301).

1022111220100 divided by its reverse (10221112201) gives a square (100 = 10²).

The spelling of 1022111220100 in words is "one trillion, twenty-two billion, one hundred eleven million, two hundred twenty thousand, one hundred".