1201211105624 has 16 divisors (see below), whose sum is σ = 2265757477200. Its totient is φ = 597009111712.

The previous prime is 1201211105623. The next prime is 1201211105671. The reversal of 1201211105624 is 4265011121021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201211105593 and 1201211105602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201211105623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449553719 + ... + 449556390.

It is an arithmetic number, because the mean of its divisors is an integer number (141609842325).

Almost surely, 2^{1201211105624} is an apocalyptic number.

It is an amenable number.

1201211105624 is a deficient number, since it is larger than the sum of its proper divisors (1064546371576).

1201211105624 is a wasteful number, since it uses less digits than its factorization.

1201211105624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899110282 (or 899110278 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 1201211105624 its reverse (4265011121021), we get a palindrome (5466222226645).

The spelling of 1201211105624 in words is "one trillion, two hundred one billion, two hundred eleven million, one hundred five thousand, six hundred twenty-four".