20211110212 has 24 divisors (see below), whose sum is σ = 37698030720. Its totient is φ = 9448118400.

The previous prime is 20211110203. The next prime is 20211110239. The reversal of 20211110212 is 21201111202.

It is a super-2 number, since 2×20211110212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20211110192 and 20211110201.

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, 973912 + ... + 994447.

It is an arithmetic number, because the mean of its divisors is an integer number (1570751280).

Almost surely, 2^20211110212 is an apocalyptic number.

It is an amenable number.

20211110212 is a deficient number, since it is larger than the sum of its proper divisors (17486920508).

20211110212 is a wasteful number, since it uses less digits than its factorization.

20211110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968531 (or 1968529 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20211110212 its reverse (21201111202), we get a palindrome (41412221414).

The spelling of 20211110212 in words is "twenty billion, two hundred eleven million, one hundred ten thousand, two hundred twelve".