21333011123100 has 36 divisors (see below), whose sum is σ = 61723512183704. Its totient is φ = 5688802966080.

The previous prime is 21333011123051. The next prime is 21333011123173. The reversal of 21333011123100 is 132111033312.

It is a happy number.

It is a super-2 number, since 2×21333011123100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35555018239 + ... + 35555018838.

Almost surely, 2^{21333011123100} is an apocalyptic number.

21333011123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333011123100 is an abundant number, since it is smaller than the sum of its proper divisors (40390501060604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21333011123100 is a wasteful number, since it uses less digits than its factorization.

21333011123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71110037094 (or 71110037087 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21333011123100 its reverse (132111033312), we get a palindrome (21465122156412).

The spelling of 21333011123100 in words is "twenty-one trillion, three hundred thirty-three billion, eleven million, one hundred twenty-three thousand, one hundred".