10012011220 has 24 divisors (see below), whose sum is σ = 21029678208. Its totient is φ = 4003956000.

The previous prime is 10012011179. The next prime is 10012011223. The reversal of 10012011220 is 2211021001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10012011197 and 10012011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012011223) 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, 48465 + ... + 149575.

It is an arithmetic number, because the mean of its divisors is an integer number (876236592).

Almost surely, 2^10012011220 is an apocalyptic number.

10012011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012011220 is an abundant number, since it is smaller than the sum of its proper divisors (11017666988).

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

10012011220 is a wasteful number, since it uses less digits than its factorization.

10012011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106071 (or 106069 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10012011220 its reverse (2211021001), we get a palindrome (12223032221).

The spelling of 10012011220 in words is "ten billion, twelve million, eleven thousand, two hundred twenty".