70122261 has 32 divisors (see below), whose sum is σ = 107827200. Its totient is φ = 40134080.

The previous prime is 70122253. The next prime is 70122277. The reversal of 70122261 is 16222107.

It is a cyclic number.

It is not a de Polignac number, because 70122261 - 2³ = 70122253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70122211) 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, 44200 + ... + 45758.

It is an arithmetic number, because the mean of its divisors is an integer number (3369600).

Almost surely, 2^70122261 is an apocalyptic number.

It is an amenable number.

70122261 is a deficient number, since it is larger than the sum of its proper divisors (37704939).

70122261 is a wasteful number, since it uses less digits than its factorization.

70122261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 70122261 is about 8373.9035700204. The cubic root of 70122261 is about 412.3683296924.

Adding to 70122261 its reverse (16222107), we get a palindrome (86344368).

The spelling of 70122261 in words is "seventy million, one hundred twenty-two thousand, two hundred sixty-one".