10420440212 has 24 divisors (see below), whose sum is σ = 22444025856. Its totient is φ = 4122371808.

The previous prime is 10420440211. The next prime is 10420440257. The reversal of 10420440212 is 21204402401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420440211) 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, 14313428 + ... + 14314155.

It is an arithmetic number, because the mean of its divisors is an integer number (935167744).

Almost surely, 2^10420440212 is an apocalyptic number.

It is an amenable number.

10420440212 is an abundant number, since it is smaller than the sum of its proper divisors (12023585644).

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

10420440212 is a wasteful number, since it uses less digits than its factorization.

10420440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28627607 (or 28627605 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10420440212 its reverse (21204402401), we get a palindrome (31624842613).

The spelling of 10420440212 in words is "ten billion, four hundred twenty million, four hundred forty thousand, two hundred twelve".