20201210201212 has 12 divisors (see below), whose sum is σ = 36214364629296. Its totient is φ = 9854248878560.

The previous prime is 20201210201153. The next prime is 20201210201233. The reversal of 20201210201212 is 21210201210202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61589055328 + ... + 61589055655.

It is an arithmetic number, because the mean of its divisors is an integer number (3017863719108).

Almost surely, 2^{20201210201212} is an apocalyptic number.

It is an amenable number.

20201210201212 is a deficient number, since it is larger than the sum of its proper divisors (16013154428084).

20201210201212 is a wasteful number, since it uses less digits than its factorization.

20201210201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123178111028 (or 123178111026 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20201210201212 its reverse (21210201210202), we get a palindrome (41411411411414).

The spelling of 20201210201212 in words is "twenty trillion, two hundred one billion, two hundred ten million, two hundred one thousand, two hundred twelve".