202121001020210 has 8 divisors (see below), whose sum is σ = 363817801836396. Its totient is φ = 80848400408080.

The previous prime is 202121001020201. The next prime is 202121001020243. The reversal of 202121001020210 is 12020100121202.

It can be written as a sum of positive squares in 2 ways, for example, as 166778653746961 + 35342347273249 = 12914281^2 + 5944943^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10106050051001 + ... + 10106050051020.

Almost surely, 2^{202121001020210} is an apocalyptic number.

202121001020210 is a deficient number, since it is larger than the sum of its proper divisors (161696800816186).

202121001020210 is a wasteful number, since it uses less digits than its factorization.

202121001020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20212100102028.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202121001020210 its reverse (12020100121202), we get a palindrome (214141101141412).

The spelling of 202121001020210 in words is "two hundred two trillion, one hundred twenty-one billion, one million, twenty thousand, two hundred ten".