1226111952 has 120 divisors (see below), whose sum is σ = 3600748704. Its totient is φ = 357343488.

The previous prime is 1226111951. The next prime is 1226111977. The reversal of 1226111952 is 2591116221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226111951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222543 + ... + 227985.

Almost surely, 2^1226111952 is an apocalyptic number.

1226111952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226111952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800374352).

1226111952 is an abundant number, since it is smaller than the sum of its proper divisors (2374636752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226111952 is a wasteful number, since it uses less digits than its factorization.

1226111952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505 (or 5480 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 1226111952 is about 35015.8814254332. The cubic root of 1226111952 is about 1070.3111308802.

The spelling of 1226111952 in words is "one billion, two hundred twenty-six million, one hundred eleven thousand, nine hundred fifty-two".