202122100210 has 16 divisors (see below), whose sum is σ = 363831281496. Its totient is φ = 80846284288.

The previous prime is 202122100183. The next prime is 202122100211. The reversal of 202122100210 is 12001221202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 201959461201 + 162639009 = 449399^2 + 12753^2 .

It is not an unprimeable number, because it can be changed into a prime (202122100211) 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, 30984 + ... + 636556.

Almost surely, 2^202122100210 is an apocalyptic number.

202122100210 is a deficient number, since it is larger than the sum of its proper divisors (161709181286).

202122100210 is a wasteful number, since it uses less digits than its factorization.

202122100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638957.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202122100210 its reverse (12001221202), we get a palindrome (214123321412).

The spelling of 202122100210 in words is "two hundred two billion, one hundred twenty-two million, one hundred thousand, two hundred ten".