200212022111021 has 4 divisors (see below), whose sum is σ = 202954652550972. Its totient is φ = 197469391671072.

The previous prime is 200212022110907. The next prime is 200212022111033. The reversal of 200212022111021 is 120111220212002.

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 48233177790121 + 151978844320900 = 6945011^2 + 12327970^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212022111021 - 2³⁴ = 200194842241837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200212022111821) 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, 1371315219866 + ... + 1371315220011.

It is an arithmetic number, because the mean of its divisors is an integer number (50738663137743).

Almost surely, 2^{200212022111021} is an apocalyptic number.

It is an amenable number.

200212022111021 is a deficient number, since it is larger than the sum of its proper divisors (2742630439951).

200212022111021 is an equidigital number, since it uses as much as digits as its factorization.

200212022111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742630439950.

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

Adding to 200212022111021 its reverse (120111220212002), we get a palindrome (320323242323023).

The spelling of 200212022111021 in words is "two hundred trillion, two hundred twelve billion, twenty-two million, one hundred eleven thousand, twenty-one".