21101231033 has 8 divisors (see below), whose sum is σ = 22217253600. Its totient is φ = 19985751648.

The previous prime is 21101231023. The next prime is 21101231051. The reversal of 21101231033 is 33013210112.

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 21101231033 - 2³⁴ = 3921361849 is a prime.

It is a super-2 number, since 2×21101231033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101231023) 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, 54803 + ... + 212616.

It is an arithmetic number, because the mean of its divisors is an integer number (2777156700).

Almost surely, 2^21101231033 is an apocalyptic number.

It is an amenable number.

21101231033 is a deficient number, since it is larger than the sum of its proper divisors (1116022567).

21101231033 is a wasteful number, since it uses less digits than its factorization.

21101231033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271591.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21101231033 its reverse (33013210112), we get a palindrome (54114441145).

The spelling of 21101231033 in words is "twenty-one billion, one hundred one million, two hundred thirty-one thousand, thirty-three".