202120001191 has 2 divisors, whose sum is σ = 202120001192. Its totient is φ = 202120001190.

The previous prime is 202120001183. The next prime is 202120001287. The reversal of 202120001191 is 191100021202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202120001191 - 2³ = 202120001183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202120001791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060000595 + 101060000596.

It is an arithmetic number, because the mean of its divisors is an integer number (101060000596).

Almost surely, 2^202120001191 is an apocalyptic number.

202120001191 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120001191 is an equidigital number, since it uses as much as digits as its factorization.

202120001191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 202120001191 its reverse (191100021202), we get a palindrome (393220022393).

The spelling of 202120001191 in words is "two hundred two billion, one hundred twenty million, one thousand, one hundred ninety-one".