20100201211212 has 24 divisors (see below), whose sum is σ = 46902821070000. Its totient is φ = 6699731130816.

The previous prime is 20100201211169. The next prime is 20100201211213. The reversal of 20100201211212 is 21211210200102.

It is a junction number, because it is equal to n+sod(n) for n = 20100201211191 and 20100201211200.

It is not an unprimeable number, because it can be changed into a prime (20100201211213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41743087 + ... + 42221862.

It is an arithmetic number, because the mean of its divisors is an integer number (1954284211250).

Almost surely, 2^{20100201211212} is an apocalyptic number.

It is an amenable number.

20100201211212 is an abundant number, since it is smaller than the sum of its proper divisors (26802619858788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20100201211212 is a wasteful number, since it uses less digits than its factorization.

20100201211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83984905 (or 83984903 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20100201211212 its reverse (21211210200102), we get a palindrome (41311411411314).

The spelling of 20100201211212 in words is "twenty trillion, one hundred billion, two hundred one million, two hundred eleven thousand, two hundred twelve".