200211001021021 has 8 divisors (see below), whose sum is σ = 201107950279544. Its totient is φ = 199314598855680.

The previous prime is 200211001020971. The next prime is 200211001021067. The reversal of 200211001021021 is 120120100112002.

It can be written as a sum of positive squares in 4 ways, for example, as 88648608484921 + 111562392536100 = 9415339^2 + 10562310^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200211001021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200211001020992 and 200211001021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211001021121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136039740 + ... + 137503573.

It is an arithmetic number, because the mean of its divisors is an integer number (25138493784943).

Almost surely, 2^{200211001021021} is an apocalyptic number.

It is an amenable number.

200211001021021 is a deficient number, since it is larger than the sum of its proper divisors (896949258523).

200211001021021 is a wasteful number, since it uses less digits than its factorization.

200211001021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273546591.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200211001021021 its reverse (120120100112002), we get a palindrome (320331101133023).

The spelling of 200211001021021 in words is "two hundred trillion, two hundred eleven billion, one million, twenty-one thousand, twenty-one".