11212002021 has 16 divisors (see below), whose sum is σ = 16469840448. Its totient is φ = 6727872000.

The previous prime is 11212002007. The next prime is 11212002023. The reversal of 11212002021 is 12020021211.

It is not a de Polignac number, because 11212002021 - 2⁷ = 11212001893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212001988 and 11212002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212002023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678636 + ... + 1685301.

It is an arithmetic number, because the mean of its divisors is an integer number (1029365028).

Almost surely, 2^11212002021 is an apocalyptic number.

11212002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11212002021 is a deficient number, since it is larger than the sum of its proper divisors (5257838427).

11212002021 is a wasteful number, since it uses less digits than its factorization.

11212002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364052.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11212002021 its reverse (12020021211), we get a palindrome (23232023232).

The spelling of 11212002021 in words is "eleven billion, two hundred twelve million, two thousand, twenty-one".