2021221001022 has 16 divisors (see below), whose sum is σ = 4042456006800. Its totient is φ = 673737999552.

The previous prime is 2021221000973. The next prime is 2021221001027. The reversal of 2021221001022 is 2201001221202.

It is a junction number, because it is equal to n+sod(n) for n = 2021221000992 and 2021221001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021221001027) 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 7 ways as a sum of consecutive naturals, for example, 2817354 + ... + 3461202.

It is an arithmetic number, because the mean of its divisors is an integer number (252653500425).

Almost surely, 2^{2021221001022} is an apocalyptic number.

2021221001022 is an abundant number, since it is smaller than the sum of its proper divisors (2021235005778).

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

2021221001022 is a wasteful number, since it uses less digits than its factorization.

2021221001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167067.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021221001022 its reverse (2201001221202), we get a palindrome (4222222222224).

The spelling of 2021221001022 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one thousand, twenty-two".