20021201022212 has 24 divisors (see below), whose sum is σ = 37963749759936. Its totient is φ = 9183863796768.

The previous prime is 20021201022203. The next prime is 20021201022233. The reversal of 20021201022212 is 21222010212002.

It is a happy 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, 1181043968 + ... + 1181060919.

It is an arithmetic number, because the mean of its divisors is an integer number (1581822906664).

Almost surely, 2^{20021201022212} is an apocalyptic number.

It is an amenable number.

20021201022212 is a deficient number, since it is larger than the sum of its proper divisors (17942548737724).

20021201022212 is a wasteful number, since it uses less digits than its factorization.

20021201022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362105067 (or 2362105065 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20021201022212 its reverse (21222010212002), we get a palindrome (41243211234214).

The spelling of 20021201022212 in words is "twenty trillion, twenty-one billion, two hundred one million, twenty-two thousand, two hundred twelve".