1201102121239 has 2 divisors, whose sum is σ = 1201102121240. Its totient is φ = 1201102121238.

The previous prime is 1201102121173. The next prime is 1201102121251. The reversal of 1201102121239 is 9321212011021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201102121239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201102121539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600551060619 + 600551060620.

It is an arithmetic number, because the mean of its divisors is an integer number (600551060620).

Almost surely, 2^{1201102121239} is an apocalyptic number.

1201102121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201102121239 is an equidigital number, since it uses as much as digits as its factorization.

1201102121239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1201102121239 in words is "one trillion, two hundred one billion, one hundred two million, one hundred twenty-one thousand, two hundred thirty-nine".