20111021202212 has 6 divisors (see below), whose sum is σ = 35194287103878. Its totient is φ = 10055510601104.

The previous prime is 20111021202131. The next prime is 20111021202221. The reversal of 20111021202212 is 21220212011102.

It can be written as a sum of positive squares in only one way, i.e., 12594946732096 + 7516074470116 = 3548936^2 + 2741546^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513877650273 + ... + 2513877650280.

It is an arithmetic number, because the mean of its divisors is an integer number (5865714517313).

Almost surely, 2^{20111021202212} is an apocalyptic number.

It is an amenable number.

20111021202212 is a deficient number, since it is larger than the sum of its proper divisors (15083265901666).

20111021202212 is a wasteful number, since it uses less digits than its factorization.

20111021202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027755300557 (or 5027755300555 counting only the distinct ones).

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

Adding to 20111021202212 its reverse (21220212011102), we get a palindrome (41331233213314).

The spelling of 20111021202212 in words is "twenty trillion, one hundred eleven billion, twenty-one million, two hundred two thousand, two hundred twelve".