121202220011 has 4 divisors (see below), whose sum is σ = 121208986800. Its totient is φ = 121195453224.

The previous prime is 121202219989. The next prime is 121202220017. The reversal of 121202220011 is 110022202121.

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-121202220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121202220017) 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, 3356456 + ... + 3392373.

It is an arithmetic number, because the mean of its divisors is an integer number (30302246700).

Almost surely, 2^121202220011 is an apocalyptic number.

121202220011 is a deficient number, since it is larger than the sum of its proper divisors (6766789).

121202220011 is an equidigital number, since it uses as much as digits as its factorization.

121202220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766788.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121202220011 its reverse (110022202121), we get a palindrome (231224422132).

The spelling of 121202220011 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty thousand, eleven".