202221999971 has 8 divisors (see below), whose sum is σ = 214394421024. Its totient is φ = 190080357760.

The previous prime is 202221999911. The next prime is 202222000003. The reversal of 202221999971 is 179999122202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202221999971 - 2²² = 202217805667 is a prime.

It is a super-2 number, since 2×202221999971² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202221999911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7681175 + ... + 7707456.

It is an arithmetic number, because the mean of its divisors is an integer number (26799302628).

Almost surely, 2^202221999971 is an apocalyptic number.

202221999971 is a deficient number, since it is larger than the sum of its proper divisors (12172421053).

202221999971 is a wasteful number, since it uses less digits than its factorization.

202221999971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389421.

The product of its (nonzero) digits is 734832, while the sum is 53.

The spelling of 202221999971 in words is "two hundred two billion, two hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred seventy-one".