1520211440012 has 12 divisors (see below), whose sum is σ = 2732271912720. Its totient is φ = 739562322096.

The previous prime is 1520211439991. The next prime is 1520211440021. The reversal of 1520211440012 is 2100441120251.

It is a super-2 number, since 2×1520211440012² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1520211440012.

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, 5135849312 + ... + 5135849607.

It is an arithmetic number, because the mean of its divisors is an integer number (227689326060).

Almost surely, 2^{1520211440012} is an apocalyptic number.

It is an amenable number.

1520211440012 is a deficient number, since it is larger than the sum of its proper divisors (1212060472708).

1520211440012 is a wasteful number, since it uses less digits than its factorization.

1520211440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271698960 (or 10271698958 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 1520211440012 its reverse (2100441120251), we get a palindrome (3620652560263).

The spelling of 1520211440012 in words is "one trillion, five hundred twenty billion, two hundred eleven million, four hundred forty thousand, twelve".