1231242201399 has 16 divisors (see below), whose sum is σ = 1986542039808. Its totient is φ = 662180679552.

The previous prime is 1231242201389. The next prime is 1231242201437. The reversal of 1231242201399 is 9931022421321.

It is not a de Polignac number, because 1231242201399 - 2⁴ = 1231242201383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231242201389) 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, 1724428497 + ... + 1724429210.

It is an arithmetic number, because the mean of its divisors is an integer number (124158877488).

Almost surely, 2^{1231242201399} is an apocalyptic number.

1231242201399 is a deficient number, since it is larger than the sum of its proper divisors (755299838409).

1231242201399 is a wasteful number, since it uses less digits than its factorization.

1231242201399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448857734.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 1231242201399 in words is "one trillion, two hundred thirty-one billion, two hundred forty-two million, two hundred one thousand, three hundred ninety-nine".