21333011122011 has 8 divisors (see below), whose sum is σ = 28455638874624. Its totient is φ = 14216195392040.

The previous prime is 21333011121997. The next prime is 21333011122013. The reversal of 21333011122011 is 11022111033312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21333011122011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21333011122013) 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, 1452997095 + ... + 1453011776.

It is an arithmetic number, because the mean of its divisors is an integer number (3556954859328).

Almost surely, 2^{21333011122011} is an apocalyptic number.

21333011122011 is a deficient number, since it is larger than the sum of its proper divisors (7122627752613).

21333011122011 is a wasteful number, since it uses less digits than its factorization.

21333011122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906011321.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21333011122011 its reverse (11022111033312), we get a palindrome (32355122155323).

The spelling of 21333011122011 in words is "twenty-one trillion, three hundred thirty-three billion, eleven million, one hundred twenty-two thousand, eleven".