121211010201 has 16 divisors (see below), whose sum is σ = 164343552768. Its totient is φ = 79444185600.

The previous prime is 121211010187. The next prime is 121211010227. The reversal of 121211010201 is 102010112121.

It is a de Polignac number, because none of the positive numbers 2^k-121211010201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121211010241) 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, 221680 + ... + 539966.

It is an arithmetic number, because the mean of its divisors is an integer number (10271472048).

Almost surely, 2^121211010201 is an apocalyptic number.

It is an amenable number.

121211010201 is a deficient number, since it is larger than the sum of its proper divisors (43132542567).

121211010201 is a wasteful number, since it uses less digits than its factorization.

121211010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320432.

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

Adding to 121211010201 its reverse (102010112121), we get a palindrome (223221122322).

The spelling of 121211010201 in words is "one hundred twenty-one billion, two hundred eleven million, ten thousand, two hundred one".