121201222011 has 8 divisors (see below), whose sum is σ = 165969241104. Its totient is φ = 78617008800.

The previous prime is 121201221983. The next prime is 121201222013. The reversal of 121201222011 is 110222102121.

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

It is not a de Polignac number, because 121201222011 - 2⁹ = 121201221499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201222013) 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, 545951340 + ... + 545951561.

It is an arithmetic number, because the mean of its divisors is an integer number (20746155138).

Almost surely, 2^121201222011 is an apocalyptic number.

121201222011 is a deficient number, since it is larger than the sum of its proper divisors (44768019093).

121201222011 is a wasteful number, since it uses less digits than its factorization.

121201222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091902941.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201222011 its reverse (110222102121), we get a palindrome (231423324132).

The spelling of 121201222011 in words is "one hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, eleven".