1022111102100 has 72 divisors (see below), whose sum is σ = 3226154325408. Its totient is φ = 247784508800.

The previous prime is 1022111102099. The next prime is 1022111102107. The reversal of 1022111102100 is 12011112201.

It is a super-2 number, since 2×1022111102100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022111102107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154862019 + ... + 154868618.

It is an arithmetic number, because the mean of its divisors is an integer number (44807698964).

Almost surely, 2^{1022111102100} is an apocalyptic number.

1022111102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022111102100 is an abundant number, since it is smaller than the sum of its proper divisors (2204043223308).

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

1022111102100 is a wasteful number, since it uses less digits than its factorization.

1022111102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309730665 (or 309730658 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1022111102100 its reverse (12011112201), we get a palindrome (1034122214301).

It can be divided in two parts, 1022111 and 102100, that added together give a palindrome (1124211).

The spelling of 1022111102100 in words is "one trillion, twenty-two billion, one hundred eleven million, one hundred two thousand, one hundred".