1201421111239 has 2 divisors, whose sum is σ = 1201421111240. Its totient is φ = 1201421111238.

The previous prime is 1201421111221. The next prime is 1201421111269. The reversal of 1201421111239 is 9321111241021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201421111239 - 2¹¹ = 1201421109191 is a prime.

It is a super-2 number, since 2×1201421111239² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201421111269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600710555619 + 600710555620.

It is an arithmetic number, because the mean of its divisors is an integer number (600710555620).

Almost surely, 2^{1201421111239} is an apocalyptic number.

1201421111239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201421111239 is an equidigital number, since it uses as much as digits as its factorization.

1201421111239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 1201421111239 in words is "one trillion, two hundred one billion, four hundred twenty-one million, one hundred eleven thousand, two hundred thirty-nine".