10012121120 has 24 divisors (see below), whose sum is σ = 23653636524. Its totient is φ = 4004848384.

The previous prime is 10012121069. The next prime is 10012121131. The reversal of 10012121120 is 2112121001.

It can be written as a sum of positive squares in 2 ways, for example, as 9920956816 + 91164304 = 99604^2 + 9548^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31287719 + ... + 31288038.

Almost surely, 2^10012121120 is an apocalyptic number.

10012121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012121120 is an abundant number, since it is smaller than the sum of its proper divisors (13641515404).

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

10012121120 is an equidigital number, since it uses as much as digits as its factorization.

10012121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62575772 (or 62575764 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10012121120 its reverse (2112121001), we get a palindrome (12124242121).

The spelling of 10012121120 in words is "ten billion, twelve million, one hundred twenty-one thousand, one hundred twenty".