211421233100 has 72 divisors (see below), whose sum is σ = 571990556928. Its totient is φ = 65897524800.

The previous prime is 211421233027. The next prime is 211421233189. The reversal of 211421233100 is 1332124112.

It is a super-2 number, since 2×211421233100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13720952 + ... + 13736351.

Almost surely, 2^211421233100 is an apocalyptic number.

211421233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211421233100 is an abundant number, since it is smaller than the sum of its proper divisors (360569323828).

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

211421233100 is a wasteful number, since it uses less digits than its factorization.

211421233100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27457335 (or 27457328 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211421233100 its reverse (1332124112), we get a palindrome (212753357212).

The spelling of 211421233100 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred thirty-three thousand, one hundred".