1223400022511 has 8 divisors (see below), whose sum is σ = 1315189274880. Its totient is φ = 1134350747928.

The previous prime is 1223400022489. The next prime is 1223400022531. The reversal of 1223400022511 is 1152200043221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223400022511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223400022531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684993521 + ... + 684995306.

It is an arithmetic number, because the mean of its divisors is an integer number (164398659360).

Almost surely, 2^{1223400022511} is an apocalyptic number.

1223400022511 is a deficient number, since it is larger than the sum of its proper divisors (91789252369).

1223400022511 is a wasteful number, since it uses less digits than its factorization.

1223400022511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369988893.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 1223400022511 its reverse (1152200043221), we get a palindrome (2375600065732).

The spelling of 1223400022511 in words is "one trillion, two hundred twenty-three billion, four hundred million, twenty-two thousand, five hundred eleven".