1121211402 has 8 divisors (see below), whose sum is σ = 2242422816. Its totient is φ = 373737132.

The previous prime is 1121211401. The next prime is 1121211419. The reversal of 1121211402 is 2041121211.

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

1121211402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1121211401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93434278 + ... + 93434289.

It is an arithmetic number, because the mean of its divisors is an integer number (280302852).

Almost surely, 2^1121211402 is an apocalyptic number.

1121211402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1121211402 is a wasteful number, since it uses less digits than its factorization.

1121211402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186868572.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1121211402 is about 33484.4949491552. The cubic root of 1121211402 is about 1038.8731019927.

Adding to 1121211402 its reverse (2041121211), we get a palindrome (3162332613).

The spelling of 1121211402 in words is "one billion, one hundred twenty-one million, two hundred eleven thousand, four hundred two".