12101211001 has 16 divisors (see below), whose sum is σ = 13245009408. Its totient is φ = 10964764800.

The previous prime is 12101210987. The next prime is 12101211011. The reversal of 12101211001 is 10011210121.

It is not a de Polignac number, because 12101211001 - 2¹⁷ = 12101079929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101211011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6070861 + ... + 6072853.

It is an arithmetic number, because the mean of its divisors is an integer number (827813088).

Almost surely, 2^12101211001 is an apocalyptic number.

12101211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101211001 is a deficient number, since it is larger than the sum of its proper divisors (1143798407).

12101211001 is a wasteful number, since it uses less digits than its factorization.

12101211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12101211001 its reverse (10011210121), we get a palindrome (22112421122).

It can be divided in two parts, 1210121 and 1001, that multiplied together give a palindrome (1211331121).

The spelling of 12101211001 in words is "twelve billion, one hundred one million, two hundred eleven thousand, one".