10001212144420 has 96 divisors (see below), whose sum is σ = 24804297213696. Its totient is φ = 3316082112000.

The previous prime is 10001212144411. The next prime is 10001212144487. The reversal of 10001212144420 is 2444121210001.

It is a junction number, because it is equal to n+sod(n) for n = 10001212144391 and 10001212144400.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7616391 + ... + 8832430.

It is an arithmetic number, because the mean of its divisors is an integer number (258378095976).

Almost surely, 2^{10001212144420} is an apocalyptic number.

10001212144420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001212144420 is an abundant number, since it is smaller than the sum of its proper divisors (14803085069276).

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

10001212144420 is a wasteful number, since it uses less digits than its factorization.

10001212144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16448981 (or 16448979 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 10001212144420 its reverse (2444121210001), we get a palindrome (12445333354421).

The spelling of 10001212144420 in words is "ten trillion, one billion, two hundred twelve million, one hundred forty-four thousand, four hundred twenty".