10201222020221 has 4 divisors (see below), whose sum is σ = 10245768841500. Its totient is φ = 10156675198944.

The previous prime is 10201222020179. The next prime is 10201222020247. The reversal of 10201222020221 is 12202022210201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9535676064121 + 665545956100 = 3087989^2 + 815810^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201222020221 - 2³⁸ = 9926344113277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10201222020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201222050221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22273410296 + ... + 22273410753.

It is an arithmetic number, because the mean of its divisors is an integer number (2561442210375).

Almost surely, 2^{10201222020221} is an apocalyptic number.

It is an amenable number.

10201222020221 is a deficient number, since it is larger than the sum of its proper divisors (44546821279).

10201222020221 is an equidigital number, since it uses as much as digits as its factorization.

10201222020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44546821278.

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

Adding to 10201222020221 its reverse (12202022210201), we get a palindrome (22403244230422).

The spelling of 10201222020221 in words is "ten trillion, two hundred one billion, two hundred twenty-two million, twenty thousand, two hundred twenty-one".