121020120221211 has 12 divisors (see below), whose sum is σ = 176770962122040. Its totient is φ = 79773562392480.

The previous prime is 121020120221201. The next prime is 121020120221219. The reversal of 121020120221211 is 112122021020121.

121020120221211 is a `hidden beast` number, since 1 + 2 + 10 + 201 + 20 + 221 + 211 = 666.

It is not a de Polignac number, because 121020120221211 - 2²² = 121020116026907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121020120221219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75543145405 + ... + 75543147006.

It is an arithmetic number, because the mean of its divisors is an integer number (14730913510170).

Almost surely, 2^{121020120221211} is an apocalyptic number.

121020120221211 is a deficient number, since it is larger than the sum of its proper divisors (55750841900829).

121020120221211 is a wasteful number, since it uses less digits than its factorization.

121020120221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151086292506 (or 151086292503 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121020120221211 its reverse (112122021020121), we get a palindrome (233142141241332).

The spelling of 121020120221211 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".