1201021222111 has 16 divisors (see below), whose sum is σ = 1338688028160. Its totient is φ = 1070808785280.

The previous prime is 1201021222019. The next prime is 1201021222123. The reversal of 1201021222111 is 1112221201021.

It is not a de Polignac number, because 1201021222111 - 2¹³ = 1201021213919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201021222211) 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, 5113546 + ... + 5343256.

It is an arithmetic number, because the mean of its divisors is an integer number (83668001760).

Almost surely, 2^{1201021222111} is an apocalyptic number.

1201021222111 is a deficient number, since it is larger than the sum of its proper divisors (137666806049).

1201021222111 is a wasteful number, since it uses less digits than its factorization.

1201021222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245934.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201021222111 its reverse (1112221201021), we get a palindrome (2313242423132).

The spelling of 1201021222111 in words is "one trillion, two hundred one billion, twenty-one million, two hundred twenty-two thousand, one hundred eleven".