1011212022100 has 72 divisors (see below), whose sum is σ = 2511682992000. Its totient is φ = 346165249920.

The previous prime is 1011212022089. The next prime is 1011212022127. The reversal of 1011212022100 is 12202121101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663475 + ... + 1569274.

It is an arithmetic number, because the mean of its divisors is an integer number (34884486000).

Almost surely, 2^{1011212022100} is an apocalyptic number.

1011212022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011212022100 is an abundant number, since it is smaller than the sum of its proper divisors (1500470969900).

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

1011212022100 is a wasteful number, since it uses less digits than its factorization.

1011212022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233417 (or 2233410 counting only the distinct ones).

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

Adding to 1011212022100 its reverse (12202121101), we get a palindrome (1023414143201).

Subtracting from 1011212022100 its reverse (12202121101), we obtain a palindrome (999009900999).

The spelling of 1011212022100 in words is "one trillion, eleven billion, two hundred twelve million, twenty-two thousand, one hundred".