1100122121020 has 48 divisors (see below), whose sum is σ = 2490934380480. Its totient is φ = 405714710016.

The previous prime is 1100122120961. The next prime is 1100122121027. The reversal of 1100122121020 is 201212210011.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100122121027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2303457 + ... + 2739736.

It is an arithmetic number, because the mean of its divisors is an integer number (51894466260).

Almost surely, 2^{1100122121020} is an apocalyptic number.

1100122121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100122121020 is an abundant number, since it is smaller than the sum of its proper divisors (1390812259460).

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

1100122121020 is a wasteful number, since it uses less digits than its factorization.

1100122121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044054 (or 5044052 counting only the distinct ones).

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

Adding to 1100122121020 its reverse (201212210011), we get a palindrome (1301334331031).

The spelling of 1100122121020 in words is "one trillion, one hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, twenty".