1210012100015 has 4 divisors (see below), whose sum is σ = 1452014520024. Its totient is φ = 968009680008.

The previous prime is 1210012100009. The next prime is 1210012100023. The reversal of 1210012100015 is 5100012100121.

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 1210012100015 - 2¹⁶ = 1210012034479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121001209997 + ... + 121001210006.

It is an arithmetic number, because the mean of its divisors is an integer number (363003630006).

Almost surely, 2^{1210012100015} is an apocalyptic number.

1210012100015 is a deficient number, since it is larger than the sum of its proper divisors (242002420009).

1210012100015 is an equidigital number, since it uses as much as digits as its factorization.

1210012100015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242002420008.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 1210012100015 its reverse (5100012100121), we get a palindrome (6310024200136).

The spelling of 1210012100015 in words is "one trillion, two hundred ten billion, twelve million, one hundred thousand, fifteen".