1100122021021 has 4 divisors (see below), whose sum is σ = 1125706254112. Its totient is φ = 1074537787932.

The previous prime is 1100122021001. The next prime is 1100122021027. The reversal of 1100122021021 is 1201202210011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100122021021 - 2⁵ = 1100122020989 is a prime.

It is a super-2 number, since 2×1100122021021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100122020992 and 1100122021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100122021027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12792116481 + ... + 12792116566.

It is an arithmetic number, because the mean of its divisors is an integer number (281426563528).

Almost surely, 2^{1100122021021} is an apocalyptic number.

It is an amenable number.

1100122021021 is a deficient number, since it is larger than the sum of its proper divisors (25584233091).

1100122021021 is an equidigital number, since it uses as much as digits as its factorization.

1100122021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25584233090.

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

Adding to 1100122021021 its reverse (1201202210011), we get a palindrome (2301324231032).

The spelling of 1100122021021 in words is "one trillion, one hundred billion, one hundred twenty-two million, twenty-one thousand, twenty-one".