1011222202021 has 4 divisors (see below), whose sum is σ = 1064444423200. Its totient is φ = 957999980844.

The previous prime is 1011222201931. The next prime is 1011222202033. The reversal of 1011222202021 is 1202022221101.

It is a happy number.

1011222202021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1011222202021 - 2²⁵ = 1011188647589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011222201986 and 1011222202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011222202321) 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, 26611110561 + ... + 26611110598.

It is an arithmetic number, because the mean of its divisors is an integer number (266111105800).

Almost surely, 2^{1011222202021} is an apocalyptic number.

It is an amenable number.

1011222202021 is a deficient number, since it is larger than the sum of its proper divisors (53222221179).

1011222202021 is an equidigital number, since it uses as much as digits as its factorization.

1011222202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53222221178.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1011222202021 its reverse (1202022221101), we get a palindrome (2213244423122).

The spelling of 1011222202021 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred two thousand, twenty-one".