20401113212 has 6 divisors (see below), whose sum is σ = 35701948128. Its totient is φ = 10200556604.

The previous prime is 20401113203. The next prime is 20401113217. The reversal of 20401113212 is 21231110402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401113217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550139148 + ... + 2550139155.

It is an arithmetic number, because the mean of its divisors is an integer number (5950324688).

Almost surely, 2^20401113212 is an apocalyptic number.

It is an amenable number.

20401113212 is a deficient number, since it is larger than the sum of its proper divisors (15300834916).

20401113212 is a wasteful number, since it uses less digits than its factorization.

20401113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100278307 (or 5100278305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20401113212 its reverse (21231110402), we get a palindrome (41632223614).

The spelling of 20401113212 in words is "twenty billion, four hundred one million, one hundred thirteen thousand, two hundred twelve".