70121223 has 6 divisors (see below), whose sum is σ = 101286224. Its totient is φ = 46747476.

The previous prime is 70121221. The next prime is 70121237. The reversal of 70121223 is 32212107.

It is not a de Polignac number, because 70121223 - 2¹ = 70121221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70121196 and 70121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70121221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3895615 + ... + 3895632.

Almost surely, 2^70121223 is an apocalyptic number.

70121223 is a deficient number, since it is larger than the sum of its proper divisors (31165001).

70121223 is a wasteful number, since it uses less digits than its factorization.

70121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7791253 (or 7791250 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 70121223 is about 8373.8415915277. The cubic root of 70121223 is about 412.3662949584.

The spelling of 70121223 in words is "seventy million, one hundred twenty-one thousand, two hundred twenty-three".