20220201001221 has 16 divisors (see below), whose sum is σ = 29037667794240. Its totient is φ = 12441686463360.

The previous prime is 20220201001199. The next prime is 20220201001243. The reversal of 20220201001221 is 12210010202202.

It is an interprime number because it is at equal distance from previous prime (20220201001199) and next prime (20220201001243).

It is not a de Polignac number, because 20220201001221 - 2¹⁸ = 20220200739077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20220201001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220201001621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31220200 + ... + 31861281.

It is an arithmetic number, because the mean of its divisors is an integer number (1814854237140).

Almost surely, 2^{20220201001221} is an apocalyptic number.

It is an amenable number.

20220201001221 is a deficient number, since it is larger than the sum of its proper divisors (8817466793019).

20220201001221 is a wasteful number, since it uses less digits than its factorization.

20220201001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63089716.

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

Adding to 20220201001221 its reverse (12210010202202), we get a palindrome (32430211203423).

The spelling of 20220201001221 in words is "twenty trillion, two hundred twenty billion, two hundred one million, one thousand, two hundred twenty-one".