1201111122019 has 4 divisors (see below), whose sum is σ = 1201178425240. Its totient is φ = 1201043818800.

The previous prime is 1201111122007. The next prime is 1201111122037. The reversal of 1201111122019 is 9102211111021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201111122019 - 2¹⁵ = 1201111089251 is a prime.

It is a super-2 number, since 2×1201111122019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111122059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33624834 + ... + 33660535.

It is an arithmetic number, because the mean of its divisors is an integer number (300294606310).

Almost surely, 2^{1201111122019} is an apocalyptic number.

1201111122019 is a deficient number, since it is larger than the sum of its proper divisors (67303221).

1201111122019 is an equidigital number, since it uses as much as digits as its factorization.

1201111122019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67303220.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 1201111122019 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred twenty-two thousand, nineteen".