1021345510215 has 16 divisors (see below), whose sum is σ = 1637014743936. Its totient is φ = 543763629600.

The previous prime is 1021345510189. The next prime is 1021345510231. The reversal of 1021345510215 is 5120155431201.

It is not a de Polignac number, because 1021345510215 - 2⁵ = 1021345510183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59614641 + ... + 59631770.

It is an arithmetic number, because the mean of its divisors is an integer number (102313421496).

Almost surely, 2^{1021345510215} is an apocalyptic number.

1021345510215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021345510215 is a deficient number, since it is larger than the sum of its proper divisors (615669233721).

1021345510215 is a wasteful number, since it uses less digits than its factorization.

1021345510215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119246990.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1021345510215 in words is "one trillion, twenty-one billion, three hundred forty-five million, five hundred ten thousand, two hundred fifteen".