2021010122222 has 256 divisors, whose sum is σ = 4163656089600. Its totient is φ = 712605358080.

The previous prime is 2021010122147. The next prime is 2021010122231. The reversal of 2021010122222 is 2222210101202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2021010122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5629554479 + ... + 5629554837.

It is an arithmetic number, because the mean of its divisors is an integer number (16264281600).

Almost surely, 2^{2021010122222} is an apocalyptic number.

2021010122222 is an abundant number, since it is smaller than the sum of its proper divisors (2142645967378).

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

2021010122222 is a wasteful number, since it uses less digits than its factorization.

2021010122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021010122222 its reverse (2222210101202), we get a palindrome (4243220223424).

The spelling of 2021010122222 in words is "two trillion, twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty-two".