11211121402 has 16 divisors (see below), whose sum is σ = 18289586952. Its totient is φ = 5123131200.

The previous prime is 11211121381. The next prime is 11211121459. The reversal of 11211121402 is 20412111211.

11211121402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10795002201 + 416119201 = 103899^2 + 20399^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2132013 + ... + 2137264.

Almost surely, 2^11211121402 is an apocalyptic number.

11211121402 is a deficient number, since it is larger than the sum of its proper divisors (7078465550).

11211121402 is a wasteful number, since it uses less digits than its factorization.

11211121402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269393.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211121402 its reverse (20412111211), we get a palindrome (31623232613).

The spelling of 11211121402 in words is "eleven billion, two hundred eleven million, one hundred twenty-one thousand, four hundred two".