11012212021 has 16 divisors (see below), whose sum is σ = 11904946560. Its totient is φ = 10155055680.

The previous prime is 11012212007. The next prime is 11012212063. The reversal of 11012212021 is 12021221011.

It is not a de Polignac number, because 11012212021 - 2⁵ = 11012211989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012211992 and 11012212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012210021) 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, 448951 + ... + 472843.

It is an arithmetic number, because the mean of its divisors is an integer number (744059160).

Almost surely, 2^11012212021 is an apocalyptic number.

It is an amenable number.

11012212021 is a deficient number, since it is larger than the sum of its proper divisors (892734539).

11012212021 is a wasteful number, since it uses less digits than its factorization.

11012212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24636.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11012212021 its reverse (12021221011), we get a palindrome (23033433032).

It can be divided in two parts, 1101 and 2212021, that added together give a palindrome (2213122).

The spelling of 11012212021 in words is "eleven billion, twelve million, two hundred twelve thousand, twenty-one".