200202110021 has 4 divisors (see below), whose sum is σ = 210739063200. Its totient is φ = 189665156844.

The previous prime is 200202109993. The next prime is 200202110023. The reversal of 200202110021 is 120011202002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120011202002 = 2 ⋅60005601001.

It is a de Polignac number, because none of the positive numbers 2^k-200202110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200202109984 and 200202110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200202110023) 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, 5268476561 + ... + 5268476598.

It is an arithmetic number, because the mean of its divisors is an integer number (52684765800).

Almost surely, 2^200202110021 is an apocalyptic number.

It is an amenable number.

200202110021 is a deficient number, since it is larger than the sum of its proper divisors (10536953179).

200202110021 is a wasteful number, since it uses less digits than its factorization.

200202110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10536953178.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200202110021 its reverse (120011202002), we get a palindrome (320213312023).

The spelling of 200202110021 in words is "two hundred billion, two hundred two million, one hundred ten thousand, twenty-one".