121012221201 has 24 divisors (see below), whose sum is σ = 176031540480. Its totient is φ = 73877075712.

The previous prime is 121012221199. The next prime is 121012221241. The reversal of 121012221201 is 102122210121.

It is not a de Polignac number, because 121012221201 - 2¹ = 121012221199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1854081 + ... + 1918238.

It is an arithmetic number, because the mean of its divisors is an integer number (7334647520).

Almost surely, 2^121012221201 is an apocalyptic number.

It is an amenable number.

121012221201 is a deficient number, since it is larger than the sum of its proper divisors (55019319279).

121012221201 is a wasteful number, since it uses less digits than its factorization.

121012221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772393 (or 3772376 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121012221201 its reverse (102122210121), we get a palindrome (223134431322).

The spelling of 121012221201 in words is "one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, two hundred one".