23215145122 has 16 divisors (see below), whose sum is σ = 37872693432. Its totient is φ = 10608595200.

The previous prime is 23215145113. The next prime is 23215145143. The reversal of 23215145122 is 22154151232.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19030478401 + 4184666721 = 137951^2 + 64689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4417623 + ... + 4422874.

Almost surely, 2^23215145122 is an apocalyptic number.

23215145122 is a deficient number, since it is larger than the sum of its proper divisors (14657548310).

23215145122 is a wasteful number, since it uses less digits than its factorization.

23215145122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8840613.

The product of its digits is 4800, while the sum is 28.

Adding to 23215145122 its reverse (22154151232), we get a palindrome (45369296354).

The spelling of 23215145122 in words is "twenty-three billion, two hundred fifteen million, one hundred forty-five thousand, one hundred twenty-two".