70215122100221 has 32 divisors (see below), whose sum is σ = 85284284659200. Its totient is φ = 56432466948096.

The previous prime is 70215122100217. The next prime is 70215122100349. The reversal of 70215122100221 is 12200122151207.

It is a cyclic number.

It is not a de Polignac number, because 70215122100221 - 2² = 70215122100217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70215122100521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33344555 + ... + 35387703.

It is an arithmetic number, because the mean of its divisors is an integer number (2665133895600).

Almost surely, 2^{70215122100221} is an apocalyptic number.

It is an amenable number.

70215122100221 is a deficient number, since it is larger than the sum of its proper divisors (15069162558979).

70215122100221 is a wasteful number, since it uses less digits than its factorization.

70215122100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044253.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 70215122100221 its reverse (12200122151207), we get a palindrome (82415244251428).

The spelling of 70215122100221 in words is "seventy trillion, two hundred fifteen billion, one hundred twenty-two million, one hundred thousand, two hundred twenty-one".