1011120122021 has 4 divisors (see below), whose sum is σ = 1011150900192. Its totient is φ = 1011089343852.

The previous prime is 1011120121993. The next prime is 1011120122053. The reversal of 1011120122021 is 1202210211101.

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 1011120122021 - 2³⁰ = 1010046380197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011120121987 and 1011120122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011120122081) 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, 15339755 + ... + 15405528.

It is an arithmetic number, because the mean of its divisors is an integer number (252787725048).

Almost surely, 2^{1011120122021} is an apocalyptic number.

It is an amenable number.

1011120122021 is a deficient number, since it is larger than the sum of its proper divisors (30778171).

1011120122021 is an equidigital number, since it uses as much as digits as its factorization.

1011120122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30778170.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011120122021 its reverse (1202210211101), we get a palindrome (2213330333122).

The spelling of 1011120122021 in words is "one trillion, eleven billion, one hundred twenty million, one hundred twenty-two thousand, twenty-one".