201212121021022 has 16 divisors (see below), whose sum is σ = 304657433237232. Its totient is φ = 99659757602880.

The previous prime is 201212121021017. The next prime is 201212121021047. The reversal of 201212121021022 is 220120121212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25052679 + ... + 32094562.

It is an arithmetic number, because the mean of its divisors is an integer number (19041089577327).

Almost surely, 2^{201212121021022} is an apocalyptic number.

201212121021022 is a deficient number, since it is larger than the sum of its proper divisors (103445312216210).

201212121021022 is a wasteful number, since it uses less digits than its factorization.

201212121021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57163803.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201212121021022 its reverse (220120121212102), we get a palindrome (421332242233124).

The spelling of 201212121021022 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-one million, twenty-one thousand, twenty-two".