2101221020022 has 16 divisors (see below), whose sum is σ = 4202950355760. Its totient is φ = 700322287392.

The previous prime is 2101221020009. The next prime is 2101221020033. The reversal of 2101221020022 is 2200201221012.

It is a junction number, because it is equal to n+sod(n) for n = 2101221019983 and 2101221020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21126073 + ... + 21225300.

It is an arithmetic number, because the mean of its divisors is an integer number (262684397235).

Almost surely, 2^{2101221020022} is an apocalyptic number.

2101221020022 is an abundant number, since it is smaller than the sum of its proper divisors (2101729335738).

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

2101221020022 is a wasteful number, since it uses less digits than its factorization.

2101221020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42359647.

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

Adding to 2101221020022 its reverse (2200201221012), we get a palindrome (4301422241034).

The spelling of 2101221020022 in words is "two trillion, one hundred one billion, two hundred twenty-one million, twenty thousand, twenty-two".