121222204311 has 16 divisors (see below), whose sum is σ = 176916141920. Its totient is φ = 73375355520.

The previous prime is 121222204291. The next prime is 121222204331. The reversal of 121222204311 is 113402222121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121222204291) and next prime (121222204331).

It is not a de Polignac number, because 121222204311 - 2⁷ = 121222204183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222204331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25475176 + ... + 25479933.

It is an arithmetic number, because the mean of its divisors is an integer number (11057258870).

Almost surely, 2^121222204311 is an apocalyptic number.

121222204311 is a deficient number, since it is larger than the sum of its proper divisors (55693937609).

121222204311 is a wasteful number, since it uses less digits than its factorization.

121222204311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50955186.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121222204311 its reverse (113402222121), we get a palindrome (234624426432).

The spelling of 121222204311 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred four thousand, three hundred eleven".