2021022111212 has 48 divisors (see below), whose sum is σ = 4067291961600. Its totient is φ = 871562522880.

The previous prime is 2021022111203. The next prime is 2021022111221. The reversal of 2021022111212 is 2121112201202.

It is an interprime number because it is at equal distance from previous prime (2021022111203) and next prime (2021022111221).

It is a super-3 number, since 3×2021022111212³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21569387 + ... + 21662882.

It is an arithmetic number, because the mean of its divisors is an integer number (84735249200).

Almost surely, 2^{2021022111212} is an apocalyptic number.

It is an amenable number.

2021022111212 is an abundant number, since it is smaller than the sum of its proper divisors (2046269850388).

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

2021022111212 is a wasteful number, since it uses less digits than its factorization.

2021022111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43232346 (or 43232344 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021022111212 its reverse (2121112201202), we get a palindrome (4142134312414).

The spelling of 2021022111212 in words is "two trillion, twenty-one billion, twenty-two million, one hundred eleven thousand, two hundred twelve".