20202121121210 has 32 divisors (see below), whose sum is σ = 41562663269760. Its totient is φ = 6925772509632.

The previous prime is 20202121121209. The next prime is 20202121121251. The reversal of 20202121121210 is 1212112120202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13207700 + ... + 14657679.

It is an arithmetic number, because the mean of its divisors is an integer number (1298833227180).

Almost surely, 2^{20202121121210} is an apocalyptic number.

20202121121210 is an abundant number, since it is smaller than the sum of its proper divisors (21360542148550).

20202121121210 is a wasteful number, since it uses less digits than its factorization.

20202121121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27875750.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20202121121210 its reverse (1212112120202), we get a palindrome (21414233241412).

The spelling of 20202121121210 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".