20121011222 has 24 divisors (see below), whose sum is σ = 32703710400. Its totient is φ = 9280383840.

The previous prime is 20121011221. The next prime is 20121011227. The reversal of 20121011222 is 22211012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121011197 and 20121011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121011221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504347 + ... + 542777.

It is an arithmetic number, because the mean of its divisors is an integer number (1362654600).

Almost surely, 2^20121011222 is an apocalyptic number.

20121011222 is a deficient number, since it is larger than the sum of its proper divisors (12582699178).

20121011222 is a wasteful number, since it uses less digits than its factorization.

20121011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40008 (or 39995 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121011222 its reverse (22211012102), we get a palindrome (42332023324).

The spelling of 20121011222 in words is "twenty billion, one hundred twenty-one million, eleven thousand, two hundred twenty-two".