1201220022111 has 16 divisors (see below), whose sum is σ = 1650203063808. Its totient is φ = 776664352800.

The previous prime is 1201220022077. The next prime is 1201220022173. The reversal of 1201220022111 is 1112200221021.

It is not a de Polignac number, because 1201220022111 - 2⁷ = 1201220021983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201220022011) 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, 17363875 + ... + 17432916.

It is an arithmetic number, because the mean of its divisors is an integer number (103137691488).

Almost surely, 2^{1201220022111} is an apocalyptic number.

1201220022111 is a deficient number, since it is larger than the sum of its proper divisors (448983041697).

1201220022111 is a wasteful number, since it uses less digits than its factorization.

1201220022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34797142.

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

Adding to 1201220022111 its reverse (1112200221021), we get a palindrome (2313420243132).

The spelling of 1201220022111 in words is "one trillion, two hundred one billion, two hundred twenty million, twenty-two thousand, one hundred eleven".