202220001001221 has 16 divisors (see below), whose sum is σ = 308146959773184. Its totient is φ = 115553462657904.

The previous prime is 202220001001181. The next prime is 202220001001297. The reversal of 202220001001221 is 122100100022202.

It is not a de Polignac number, because 202220001001221 - 2¹⁰ = 202220001000197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202220001001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220001003221) 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, 31295235 + ... + 37199888.

It is an arithmetic number, because the mean of its divisors is an integer number (19259184985824).

Almost surely, 2^{202220001001221} is an apocalyptic number.

202220001001221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202220001001221 is a deficient number, since it is larger than the sum of its proper divisors (105926958771963).

202220001001221 is a wasteful number, since it uses less digits than its factorization.

202220001001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68635720.

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

Adding to 202220001001221 its reverse (122100100022202), we get a palindrome (324320101023423).

The spelling of 202220001001221 in words is "two hundred two trillion, two hundred twenty billion, one million, one thousand, two hundred twenty-one".