2021001212022 has 64 divisors (see below), whose sum is σ = 4543334724096. Its totient is φ = 594658944000.

The previous prime is 2021001211993. The next prime is 2021001212057. The reversal of 2021001212022 is 2202121001202.

It is a junction number, because it is equal to n+sod(n) for n = 2021001211992 and 2021001212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7037013 + ... + 7318575.

It is an arithmetic number, because the mean of its divisors is an integer number (70989605064).

Almost surely, 2^{2021001212022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021001212022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271667362048).

2021001212022 is an abundant number, since it is smaller than the sum of its proper divisors (2522333512074).

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

2021001212022 is a wasteful number, since it uses less digits than its factorization.

2021001212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285605.

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

Adding to 2021001212022 its reverse (2202121001202), we get a palindrome (4223122213224).

The spelling of 2021001212022 in words is "two trillion, twenty-one billion, one million, two hundred twelve thousand, twenty-two".