70021215505021 has 8 divisors (see below), whose sum is σ = 76405777560288. Its totient is φ = 63639819618000.

The previous prime is 70021215504913. The next prime is 70021215505057. The reversal of 70021215505021 is 12050551212007.

It is a happy number.

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 70021215505021 - 2²⁷ = 70021081287293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70021215503021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791495815 + ... + 791584276.

It is an arithmetic number, because the mean of its divisors is an integer number (9550722195036).

Almost surely, 2^{70021215505021} is an apocalyptic number.

It is an amenable number.

70021215505021 is a deficient number, since it is larger than the sum of its proper divisors (6384562055267).

70021215505021 is a wasteful number, since it uses less digits than its factorization.

70021215505021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583084123.

The product of its (nonzero) digits is 7000, while the sum is 31.

Adding to 70021215505021 its reverse (12050551212007), we get a palindrome (82071766717028).

The spelling of 70021215505021 in words is "seventy trillion, twenty-one billion, two hundred fifteen million, five hundred five thousand, twenty-one".