12101221001010 has 16 divisors (see below), whose sum is σ = 29042930402496. Its totient is φ = 3226992266928.

The previous prime is 12101221000969. The next prime is 12101221001011. The reversal of 12101221001010 is 1010012210121.

It is not an unprimeable number, because it can be changed into a prime (12101221001011) 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, 201687016654 + ... + 201687016713.

It is an arithmetic number, because the mean of its divisors is an integer number (1815183150156).

Almost surely, 2^{12101221001010} is an apocalyptic number.

12101221001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12101221001010 is an abundant number, since it is smaller than the sum of its proper divisors (16941709401486).

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

12101221001010 is a wasteful number, since it uses less digits than its factorization.

12101221001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403374033377.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12101221001010 its reverse (1010012210121), we get a palindrome (13111233211131).

The spelling of 12101221001010 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, one thousand, ten".