11011121021012 has 96 divisors (see below), whose sum is σ = 23870446693632. Its totient is φ = 4336260397056.

The previous prime is 11011121020997. The next prime is 11011121021039. The reversal of 11011121021012 is 21012012111011.

It is a super-2 number, since 2×11011121021012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46815818 + ... + 47050430.

It is an arithmetic number, because the mean of its divisors is an integer number (248650486392).

Almost surely, 2^{11011121021012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11011121021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11935223346816).

11011121021012 is an abundant number, since it is smaller than the sum of its proper divisors (12859325672620).

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

11011121021012 is a wasteful number, since it uses less digits than its factorization.

11011121021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236977 (or 236975 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011121021012 its reverse (21012012111011), we get a palindrome (32023133132023).

The spelling of 11011121021012 in words is "eleven trillion, eleven billion, one hundred twenty-one million, twenty-one thousand, twelve".