20112201212 has 6 divisors (see below), whose sum is σ = 35196352128. Its totient is φ = 10056100604.

The previous prime is 20112201199. The next prime is 20112201217. The reversal of 20112201212 is 21210221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112201217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2514025148 + ... + 2514025155.

It is an arithmetic number, because the mean of its divisors is an integer number (5866058688).

Almost surely, 2^20112201212 is an apocalyptic number.

It is an amenable number.

20112201212 is a deficient number, since it is larger than the sum of its proper divisors (15084150916).

20112201212 is a wasteful number, since it uses less digits than its factorization.

20112201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028050307 (or 5028050305 counting only the distinct ones).

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

Adding to 20112201212 its reverse (21210221102), we get a palindrome (41322422314).

The spelling of 20112201212 in words is "twenty billion, one hundred twelve million, two hundred one thousand, two hundred twelve".