1121212254 has 16 divisors (see below), whose sum is σ = 2374332048. Its totient is φ = 351752832.

The previous prime is 1121212241. The next prime is 1121212273. The reversal of 1121212254 is 4522121211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121212254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5496037 + ... + 5496240.

It is an arithmetic number, because the mean of its divisors is an integer number (148395753).

Almost surely, 2^1121212254 is an apocalyptic number.

1121212254 is an abundant number, since it is smaller than the sum of its proper divisors (1253119794).

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

1121212254 is a wasteful number, since it uses less digits than its factorization.

1121212254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992299.

The product of its digits is 320, while the sum is 21.

The square root of 1121212254 is about 33484.5076714591. The cubic root of 1121212254 is about 1038.8733651365.

Adding to 1121212254 its reverse (4522121211), we get a palindrome (5643333465).

The spelling of 1121212254 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred fifty-four".