202001221011 has 4 divisors (see below), whose sum is σ = 269334961352. Its totient is φ = 134667480672.

The previous prime is 202001221007. The next prime is 202001221027. The reversal of 202001221011 is 110122100202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202001221011 - 2² = 202001221007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001221001) 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, 33666870166 + ... + 33666870171.

It is an arithmetic number, because the mean of its divisors is an integer number (67333740338).

Almost surely, 2^202001221011 is an apocalyptic number.

202001221011 is a deficient number, since it is larger than the sum of its proper divisors (67333740341).

202001221011 is an equidigital number, since it uses as much as digits as its factorization.

202001221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67333740340.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202001221011 its reverse (110122100202), we get a palindrome (312123321213).

The spelling of 202001221011 in words is "two hundred two billion, one million, two hundred twenty-one thousand, eleven".