13512221623436 has 12 divisors (see below), whose sum is σ = 23805088431600. Its totient is φ = 6710767785840.

The previous prime is 13512221623423. The next prime is 13512221623441. The reversal of 13512221623436 is 63432612221531.

It is a super-2 number, since 2×13512221623436² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13512221623393 and 13512221623402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11335755800 + ... + 11335756991.

It is an arithmetic number, because the mean of its divisors is an integer number (1983757369300).

Almost surely, 2^{13512221623436} is an apocalyptic number.

It is an amenable number.

13512221623436 is a deficient number, since it is larger than the sum of its proper divisors (10292866808164).

13512221623436 is a wasteful number, since it uses less digits than its factorization.

13512221623436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671512944 (or 22671512942 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

Adding to 13512221623436 its reverse (63432612221531), we get a palindrome (76944833844967).

The spelling of 13512221623436 in words is "thirteen trillion, five hundred twelve billion, two hundred twenty-one million, six hundred twenty-three thousand, four hundred thirty-six".