11021212033 has 8 divisors (see below), whose sum is σ = 11977889000. Its totient is φ = 10080091008.

The previous prime is 11021211983. The next prime is 11021212049. The reversal of 11021212033 is 33021212011.

It can be written as a sum of positive squares in 4 ways, for example, as 352801089 + 10668410944 = 18783^2 + 103288^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11021212033 is a prime.

It is a super-2 number, since 2×11021212033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021211998 and 11021212016.

It is not an unprimeable number, because it can be changed into a prime (11021212063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3887508 + ... + 3890341.

It is an arithmetic number, because the mean of its divisors is an integer number (1497236125).

Almost surely, 2^11021212033 is an apocalyptic number.

11021212033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11021212033 is a deficient number, since it is larger than the sum of its proper divisors (956676967).

11021212033 is a wasteful number, since it uses less digits than its factorization.

11021212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7777971.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11021212033 its reverse (33021212011), we get a palindrome (44042424044).

The spelling of 11021212033 in words is "eleven billion, twenty-one million, two hundred twelve thousand, thirty-three".