211203331230021 has 32 divisors (see below), whose sum is σ = 304459005312000. Its totient is φ = 129460172734464.

The previous prime is 211203331230013. The next prime is 211203331230053. The reversal of 211203331230021 is 120032133302112.

It is not a de Polignac number, because 211203331230021 - 2³ = 211203331230013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211203331229973 and 211203331230000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211203331237021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247633516 + ... + 248484938.

It is an arithmetic number, because the mean of its divisors is an integer number (9514343916000).

Almost surely, 2^{211203331230021} is an apocalyptic number.

It is an amenable number.

211203331230021 is a deficient number, since it is larger than the sum of its proper divisors (93255674081979).

211203331230021 is a wasteful number, since it uses less digits than its factorization.

211203331230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876445.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 211203331230021 its reverse (120032133302112), we get a palindrome (331235464532133).

The spelling of 211203331230021 in words is "two hundred eleven trillion, two hundred three billion, three hundred thirty-one million, two hundred thirty thousand, twenty-one".