12101211021201 has 16 divisors (see below), whose sum is σ = 16329754539840. Its totient is φ = 7970075634240.

The previous prime is 12101211021131. The next prime is 12101211021217. The reversal of 12101211021201 is 10212011210121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12101211021201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12101211021101) 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, 9687171 + ... + 10864791.

It is an arithmetic number, because the mean of its divisors is an integer number (1020609658740).

Almost surely, 2^{12101211021201} is an apocalyptic number.

It is an amenable number.

12101211021201 is a deficient number, since it is larger than the sum of its proper divisors (4228543518639).

12101211021201 is a wasteful number, since it uses less digits than its factorization.

12101211021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218976.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12101211021201 its reverse (10212011210121), we get a palindrome (22313222231322).

It can be divided in two parts, 1210121 and 1021201, that multiplied together give a palindrome (1235776775321).

The spelling of 12101211021201 in words is "twelve trillion, one hundred one billion, two hundred eleven million, twenty-one thousand, two hundred one".