202210200111221 has 4 divisors (see below), whose sum is σ = 202210302388332. Its totient is φ = 202210097834112.

The previous prime is 202210200111191. The next prime is 202210200111281. The reversal of 202210200111221 is 122111002012202.

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 142411143100996 + 59799057010225 = 11933614^2 + 7732985^2 .

It is a cyclic number.

It is not a de Polignac number, because 202210200111221 - 2³⁸ = 201935322204277 is a prime.

It is a super-2 number, since 2×202210200111221² (a number of 29 digits) contains 22 as substring.

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 202210200111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210200111281) 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, 48113276 + ... + 52146981.

It is an arithmetic number, because the mean of its divisors is an integer number (50552575597083).

Almost surely, 2^{202210200111221} is an apocalyptic number.

It is an amenable number.

202210200111221 is a deficient number, since it is larger than the sum of its proper divisors (102277111).

202210200111221 is a wasteful number, since it uses less digits than its factorization.

202210200111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102277110.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202210200111221 its reverse (122111002012202), we get a palindrome (324321202123423).

The spelling of 202210200111221 in words is "two hundred two trillion, two hundred ten billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".