2101515311223 has 24 divisors (see below), whose sum is σ = 3252806142768. Its totient is φ = 1302711113472.

The previous prime is 2101515311219. The next prime is 2101515311237. The reversal of 2101515311223 is 3221135151012.

2101515311223 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 5 + 1 + 531 + 122 + 3 = 666.

It is not a de Polignac number, because 2101515311223 - 2² = 2101515311219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101515321223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82730640 + ... + 82756037.

It is an arithmetic number, because the mean of its divisors is an integer number (135533589282).

Almost surely, 2^{2101515311223} is an apocalyptic number.

2101515311223 is a deficient number, since it is larger than the sum of its proper divisors (1151290831545).

2101515311223 is a wasteful number, since it uses less digits than its factorization.

2101515311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165486783 (or 165486780 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 2101515311223 in words is "two trillion, one hundred one billion, five hundred fifteen million, three hundred eleven thousand, two hundred twenty-three".