11301212021 has 8 divisors (see below), whose sum is σ = 12330825888. Its totient is φ = 10271970000.

The previous prime is 11301212017. The next prime is 11301212029. The reversal of 11301212021 is 12021210311.

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

It is a cyclic number.

It is not a de Polignac number, because 11301212021 - 2² = 11301212017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11301211987 and 11301212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301212029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27395 + ... + 152816.

It is an arithmetic number, because the mean of its divisors is an integer number (1541353236).

Almost surely, 2^11301212021 is an apocalyptic number.

11301212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11301212021 is a deficient number, since it is larger than the sum of its proper divisors (1029613867).

11301212021 is a wasteful number, since it uses less digits than its factorization.

11301212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185923.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11301212021 its reverse (12021210311), we get a palindrome (23322422332).

It can be divided in two parts, 11301 and 212021, that added together give a palindrome (223322).

The spelling of 11301212021 in words is "eleven billion, three hundred one million, two hundred twelve thousand, twenty-one".