20011022212 has 24 divisors (see below), whose sum is σ = 37161230400. Its totient is φ = 9408274656.

The previous prime is 20011022197. The next prime is 20011022237. The reversal of 20011022212 is 21222011002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011022192 and 20011022201.

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, 1837887 + ... + 1848742.

It is an arithmetic number, because the mean of its divisors is an integer number (1548384600).

Almost surely, 2^20011022212 is an apocalyptic number.

It is an amenable number.

20011022212 is a deficient number, since it is larger than the sum of its proper divisors (17150208188).

20011022212 is a wasteful number, since it uses less digits than its factorization.

20011022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686715 (or 3686713 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20011022212 its reverse (21222011002), we get a palindrome (41233033214).

The spelling of 20011022212 in words is "twenty billion, eleven million, twenty-two thousand, two hundred twelve".