20112210140 has 24 divisors (see below), whose sum is σ = 46075245552. Its totient is φ = 7313530880.

The previous prime is 20112210127. The next prime is 20112210149. The reversal of 20112210140 is 4101221102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112210149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45709349 + ... + 45709788.

It is an arithmetic number, because the mean of its divisors is an integer number (1919801898).

Almost surely, 2^20112210140 is an apocalyptic number.

20112210140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112210140 is an abundant number, since it is smaller than the sum of its proper divisors (25963035412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20112210140 is a wasteful number, since it uses less digits than its factorization.

20112210140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91419157 (or 91419155 counting only the distinct ones).

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

Adding to 20112210140 its reverse (4101221102), we get a palindrome (24213431242).

The spelling of 20112210140 in words is "twenty billion, one hundred twelve million, two hundred ten thousand, one hundred forty".