21021402613315 has 8 divisors (see below), whose sum is σ = 27166120300368. Its totient is φ = 15523497314400.

The previous prime is 21021402613297. The next prime is 21021402613333. The reversal of 21021402613315 is 51331620412012.

It is an interprime number because it is at equal distance from previous prime (21021402613297) and next prime (21021402613333).

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

It is not a de Polignac number, because 21021402613315 - 2⁹ = 21021402612803 is a prime.

It is a super-2 number, since 2×21021402613315² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161703096961 + ... + 161703097090.

It is an arithmetic number, because the mean of its divisors is an integer number (3395765037546).

Almost surely, 2^{21021402613315} is an apocalyptic number.

21021402613315 is a deficient number, since it is larger than the sum of its proper divisors (6144717687053).

21021402613315 is a wasteful number, since it uses less digits than its factorization.

21021402613315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323406194069.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 21021402613315 in words is "twenty-one trillion, twenty-one billion, four hundred two million, six hundred thirteen thousand, three hundred fifteen".