200121222101011 has 4 divisors (see below), whose sum is σ = 206576745394624. Its totient is φ = 193665698807400.

The previous prime is 200121222100997. The next prime is 200121222101041. The reversal of 200121222101011 is 110101222121002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121222101011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121222101041) 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, 3227761646760 + ... + 3227761646821.

It is an arithmetic number, because the mean of its divisors is an integer number (51644186348656).

Almost surely, 2^{200121222101011} is an apocalyptic number.

200121222101011 is a deficient number, since it is larger than the sum of its proper divisors (6455523293613).

200121222101011 is an equidigital number, since it uses as much as digits as its factorization.

200121222101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455523293612.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 200121222101011 its reverse (110101222121002), we get a palindrome (310222444222013).

The spelling of 200121222101011 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, eleven".