11121020012 has 6 divisors (see below), whose sum is σ = 19461785028. Its totient is φ = 5560510004.

The previous prime is 11121019981. The next prime is 11121020023. The reversal of 11121020012 is 21002012111.

It is a super-2 number, since 2×11121020012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11121019975 and 11121020002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390127498 + ... + 1390127505.

It is an arithmetic number, because the mean of its divisors is an integer number (3243630838).

Almost surely, 2^11121020012 is an apocalyptic number.

It is an amenable number.

11121020012 is a deficient number, since it is larger than the sum of its proper divisors (8340765016).

11121020012 is a wasteful number, since it uses less digits than its factorization.

11121020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780255007 (or 2780255005 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11121020012 its reverse (21002012111), we get a palindrome (32123032123).

The spelling of 11121020012 in words is "eleven billion, one hundred twenty-one million, twenty thousand, twelve".