121220220001211 has 8 divisors (see below), whose sum is σ = 123514901531280. Its totient is φ = 118925816529312.

The previous prime is 121220220001169. The next prime is 121220220001249. The reversal of 121220220001211 is 112100022022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220220001211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121220220001211.

It is not an unprimeable number, because it can be changed into a prime (121220220001261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68634281 + ... + 70378298.

It is an arithmetic number, because the mean of its divisors is an integer number (15439362691410).

Almost surely, 2^{121220220001211} is an apocalyptic number.

121220220001211 is a deficient number, since it is larger than the sum of its proper divisors (2294681530069).

121220220001211 is a wasteful number, since it uses less digits than its factorization.

121220220001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139029085.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220220001211 its reverse (112100022022121), we get a palindrome (233320242023332).

The spelling of 121220220001211 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty million, one thousand, two hundred eleven".