21122000200 has 96 divisors (see below), whose sum is σ = 59425660800. Its totient is φ = 6815831040.

The previous prime is 21122000167. The next prime is 21122000203. The reversal of 21122000200 is 200022112.

It is a super-2 number, since 2×21122000200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21122000203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419940 + ... + 467539.

It is an arithmetic number, because the mean of its divisors is an integer number (619017300).

Almost surely, 2^21122000200 is an apocalyptic number.

21122000200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122000200 is an abundant number, since it is smaller than the sum of its proper divisors (38303660600).

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

21122000200 is a wasteful number, since it uses less digits than its factorization.

21122000200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887519 (or 887510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21122000200 its reverse (200022112), we get a palindrome (21322022312).

It can be divided in two parts, 21 and 122000200, that added together give a palindrome (122000221).

The spelling of 21122000200 in words is "twenty-one billion, one hundred twenty-two million, two hundred", and thus it is an aban number.