1255120102102 has 4 divisors (see below), whose sum is σ = 1882680153156. Its totient is φ = 627560051050.

The previous prime is 1255120102021. The next prime is 1255120102123. The reversal of 1255120102102 is 2012010215521.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313780025524 + ... + 313780025527.

It is an arithmetic number, because the mean of its divisors is an integer number (470670038289).

Almost surely, 2^{1255120102102} is an apocalyptic number.

1255120102102 is a deficient number, since it is larger than the sum of its proper divisors (627560051054).

1255120102102 is an equidigital number, since it uses as much as digits as its factorization.

1255120102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627560051053.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 1255120102102 its reverse (2012010215521), we get a palindrome (3267130317623).

The spelling of 1255120102102 in words is "one trillion, two hundred fifty-five billion, one hundred twenty million, one hundred two thousand, one hundred two".