1520012020111 has 8 divisors (see below), whose sum is σ = 1640581765200. Its totient is φ = 1399963095552.

The previous prime is 1520012019959. The next prime is 1520012020133. The reversal of 1520012020111 is 1110202100251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520012020111 - 2²⁷ = 1519877802383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520012020171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130199065 + ... + 130210738.

It is an arithmetic number, because the mean of its divisors is an integer number (205072720650).

Almost surely, 2^{1520012020111} is an apocalyptic number.

1520012020111 is a deficient number, since it is larger than the sum of its proper divisors (120569745089).

1520012020111 is a wasteful number, since it uses less digits than its factorization.

1520012020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260410265.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1520012020111 its reverse (1110202100251), we get a palindrome (2630214120362).

The spelling of 1520012020111 in words is "one trillion, five hundred twenty billion, twelve million, twenty thousand, one hundred eleven".