70219170121 has 9 divisors (see below), whose sum is σ = 70636331829. Its totient is φ = 69804462336.

The previous prime is 70219170103. The next prime is 70219170163. The reversal of 70219170121 is 12107191207.

The square root of 70219170121 is 264989.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10985345721 + 59233824400 = 104811^2 + 243380^2 .

It is not a de Polignac number, because 70219170121 - 2¹¹ = 70219168073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70219170421) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51142191 + ... + 51143563.

Almost surely, 2^70219170121 is an apocalyptic number.

70219170121 is the 264989-th square number.

70219170121 is the 132495-th centered octagonal number.

It is an amenable number.

70219170121 is a deficient number, since it is larger than the sum of its proper divisors (417161708).

70219170121 is an frugal number, since it uses more digits than its factorization.

70219170121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 31.

Multiplying 70219170121 by its product of nonzero digits (1764), we get a square (123866616093444 = 11129538²).

The spelling of 70219170121 in words is "seventy billion, two hundred nineteen million, one hundred seventy thousand, one hundred twenty-one".