201221122021022 has 32 divisors (see below), whose sum is σ = 312375507865344. Its totient is φ = 97112949753600.

The previous prime is 201221122020977. The next prime is 201221122021039. The reversal of 201221122021022 is 220120221122102.

It is a junction number, because it is equal to n+sod(n) for n = 201221122020985 and 201221122021003.

It is a congruent number.

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, 66458528 + ... + 69420300.

It is an arithmetic number, because the mean of its divisors is an integer number (9761734620792).

Almost surely, 2^{201221122021022} is an apocalyptic number.

201221122021022 is a deficient number, since it is larger than the sum of its proper divisors (111154385844322).

201221122021022 is a wasteful number, since it uses less digits than its factorization.

201221122021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964644.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201221122021022 its reverse (220120221122102), we get a palindrome (421341343143124).

The spelling of 201221122021022 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-one thousand, twenty-two".