200220210112121 has 4 divisors (see below), whose sum is σ = 200221260902772. Its totient is φ = 200219159321472.

The previous prime is 200220210112093. The next prime is 200220210112129. The reversal of 200220210112121 is 121211012022002.

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 127628106102121 + 72592104010000 = 11297261^2 + 8520100^2 .

It is a cyclic number.

It is not a de Polignac number, because 200220210112121 - 2³⁴ = 200203030242937 is a prime.

It is a super-2 number, since 2×200220210112121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200220210112121.

It is not an unprimeable number, because it can be changed into a prime (200220210112129) 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, 525109460 + ... + 525490613.

It is an arithmetic number, because the mean of its divisors is an integer number (50055315225693).

Almost surely, 2^{200220210112121} is an apocalyptic number.

It is an amenable number.

200220210112121 is a deficient number, since it is larger than the sum of its proper divisors (1050790651).

200220210112121 is a wasteful number, since it uses less digits than its factorization.

200220210112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050790650.

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

Adding to 200220210112121 its reverse (121211012022002), we get a palindrome (321431222134123).

The spelling of 200220210112121 in words is "two hundred trillion, two hundred twenty billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-one".