11223221951 has 8 divisors (see below), whose sum is σ = 11632304640. Its totient is φ = 10819705248.

The previous prime is 11223221941. The next prime is 11223221963. The reversal of 11223221951 is 15912232211.

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-11223221951 is a prime.

It is a super-2 number, since 2×11223221951² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223221941) 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, 1387391 + ... + 1395456.

It is an arithmetic number, because the mean of its divisors is an integer number (1454038080).

Almost surely, 2^11223221951 is an apocalyptic number.

11223221951 is a deficient number, since it is larger than the sum of its proper divisors (409082689).

11223221951 is a wasteful number, since it uses less digits than its factorization.

11223221951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782993.

The product of its digits is 2160, while the sum is 29.

The spelling of 11223221951 in words is "eleven billion, two hundred twenty-three million, two hundred twenty-one thousand, nine hundred fifty-one".