202121202010 has 192 divisors, whose sum is σ = 468521044992. Its totient is φ = 62192600064.

The previous prime is 202121201999. The next prime is 202121202037. The reversal of 202121202010 is 10202121202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 63819447 + ... + 63822613.

It is an arithmetic number, because the mean of its divisors is an integer number (2440213776).

Almost surely, 2^202121202010 is an apocalyptic number.

202121202010 is an abundant number, since it is smaller than the sum of its proper divisors (266399842982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202121202010 is a wasteful number, since it uses less digits than its factorization.

202121202010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477 (or 3470 counting only the distinct ones).

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

Adding to 202121202010 its reverse (10202121202), we get a palindrome (212323323212).

The spelling of 202121202010 in words is "two hundred two billion, one hundred twenty-one million, two hundred two thousand, ten".