12021012010 has 64 divisors (see below), whose sum is σ = 25125230592. Its totient is φ = 4055835456.

The previous prime is 12021012007. The next prime is 12021012019. The reversal of 12021012010 is 1021012021.

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

It is not an unprimeable number, because it can be changed into a prime (12021012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1524097 + ... + 1531963.

It is an arithmetic number, because the mean of its divisors is an integer number (392581728).

Almost surely, 2^12021012010 is an apocalyptic number.

12021012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021012010 is an abundant number, since it is smaller than the sum of its proper divisors (13104218582).

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

12021012010 is a wasteful number, since it uses less digits than its factorization.

12021012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8227.

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

Adding to 12021012010 its reverse (1021012021), we get a palindrome (13042024031).

The spelling of 12021012010 in words is "twelve billion, twenty-one million, twelve thousand, ten".