70121221522 has 16 divisors (see below), whose sum is σ = 114749550432. Its totient is φ = 31871689920.

The previous prime is 70121221507. The next prime is 70121221543. The reversal of 70121221522 is 22512212107.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448513 + ... + 584299.

It is an arithmetic number, because the mean of its divisors is an integer number (7171846902).

Almost surely, 2^70121221522 is an apocalyptic number.

70121221522 is a deficient number, since it is larger than the sum of its proper divisors (44628328910).

70121221522 is a wasteful number, since it uses less digits than its factorization.

70121221522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159273.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 70121221522 its reverse (22512212107), we get a palindrome (92633433629).

The spelling of 70121221522 in words is "seventy billion, one hundred twenty-one million, two hundred twenty-one thousand, five hundred twenty-two".