121222011011 has 2 divisors, whose sum is σ = 121222011012. Its totient is φ = 121222011010.

The previous prime is 121222010983. The next prime is 121222011041. The reversal of 121222011011 is 110110222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121222011011 - 2²⁶ = 121154902147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611005505 + 60611005506.

It is an arithmetic number, because the mean of its divisors is an integer number (60611005506).

Almost surely, 2^121222011011 is an apocalyptic number.

121222011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222011011 is an equidigital number, since it uses as much as digits as its factorization.

121222011011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121222011011 its reverse (110110222121), we get a palindrome (231332233132).

The spelling of 121222011011 in words is "one hundred twenty-one billion, two hundred twenty-two million, eleven thousand, eleven".