202001200111221 has 16 divisors (see below), whose sum is σ = 310635309916800. Its totient is φ = 114370273194048.

The previous prime is 202001200111199. The next prime is 202001200111237. The reversal of 202001200111221 is 122111002100202.

It is not a de Polignac number, because 202001200111221 - 2⁶ = 202001200111157 is a prime.

It is a super-2 number, since 2×202001200111221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202001200111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001200111241) 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, 44124331506 + ... + 44124336083.

It is an arithmetic number, because the mean of its divisors is an integer number (19414706869800).

Almost surely, 2^{202001200111221} is an apocalyptic number.

202001200111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202001200111221 is a deficient number, since it is larger than the sum of its proper divisors (108634109805579).

202001200111221 is a wasteful number, since it uses less digits than its factorization.

202001200111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88248667708.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202001200111221 its reverse (122111002100202), we get a palindrome (324112202211423).

The spelling of 202001200111221 in words is "two hundred two trillion, one billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".