1011022222021 has 24 divisors (see below), whose sum is σ = 1228397970240. Its totient is φ = 814964685312.

The previous prime is 1011022222013. The next prime is 1011022222027. The reversal of 1011022222021 is 1202222201101.

It is a happy number.

It is not a de Polignac number, because 1011022222021 - 2³ = 1011022222013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011022221986 and 1011022222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011022222027) by changing a digit.

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, 2348481 + ... + 2745433.

It is an arithmetic number, because the mean of its divisors is an integer number (51183248760).

Almost surely, 2^{1011022222021} is an apocalyptic number.

It is an amenable number.

1011022222021 is a deficient number, since it is larger than the sum of its proper divisors (217375748219).

1011022222021 is a wasteful number, since it uses less digits than its factorization.

1011022222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398253 (or 398236 counting only the distinct ones).

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

Adding to 1011022222021 its reverse (1202222201101), we get a palindrome (2213244423122).

The spelling of 1011022222021 in words is "one trillion, eleven billion, twenty-two million, two hundred twenty-two thousand, twenty-one".