121001221001201 has 16 divisors (see below), whose sum is σ = 122683378854528. Its totient is φ = 119329430880000.

The previous prime is 121001221001189. The next prime is 121001221001203. The reversal of 121001221001201 is 102100122100121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001221001201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001221001203) 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, 25475060 + ... + 29849306.

It is an arithmetic number, because the mean of its divisors is an integer number (7667711178408).

Almost surely, 2^{121001221001201} is an apocalyptic number.

It is an amenable number.

121001221001201 is a deficient number, since it is larger than the sum of its proper divisors (1682157853327).

121001221001201 is a wasteful number, since it uses less digits than its factorization.

121001221001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375432.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121001221001201 its reverse (102100122100121), we get a palindrome (223101343101322).

It can be divided in two parts, 12100122100120 and 1, that added together give a palindrome (12100122100121).

The spelling of 121001221001201 in words is "one hundred twenty-one trillion, one billion, two hundred twenty-one million, one thousand, two hundred one".