121012221201211 has 4 divisors (see below), whose sum is σ = 121014941660712. Its totient is φ = 121009500741712.

The previous prime is 121012221201133. The next prime is 121012221201217. The reversal of 121012221201211 is 112102122210121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012221201211 is a prime.

It is a super-3 number, since 3×121012221201211³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012221201217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360163026 + ... + 1360251991.

It is an arithmetic number, because the mean of its divisors is an integer number (30253735415178).

Almost surely, 2^{121012221201211} is an apocalyptic number.

121012221201211 is a deficient number, since it is larger than the sum of its proper divisors (2720459501).

121012221201211 is an equidigital number, since it uses as much as digits as its factorization.

121012221201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720459500.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121012221201211 its reverse (112102122210121), we get a palindrome (233114343411332).

The spelling of 121012221201211 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred one thousand, two hundred eleven".