23220212535 has 48 divisors (see below), whose sum is σ = 45894086784. Its totient is φ = 10759044096.

The previous prime is 23220212489. The next prime is 23220212573. The reversal of 23220212535 is 53521202232.

It is not a de Polignac number, because 23220212535 - 2⁹ = 23220212023 is a prime.

It is a super-2 number, since 2×23220212535² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23220212499 and 23220212508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1157487 + ... + 1177376.

It is an arithmetic number, because the mean of its divisors is an integer number (956126808).

Almost surely, 2^23220212535 is an apocalyptic number.

23220212535 is a deficient number, since it is larger than the sum of its proper divisors (22673874249).

23220212535 is a wasteful number, since it uses less digits than its factorization.

23220212535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334904 (or 2334901 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 23220212535 its reverse (53521202232), we get a palindrome (76741414767).

The spelling of 23220212535 in words is "twenty-three billion, two hundred twenty million, two hundred twelve thousand, five hundred thirty-five".