21201310122030 has 96 divisors (see below), whose sum is σ = 55200095496000. Its totient is φ = 5645820911616.

The previous prime is 21201310122019. The next prime is 21201310122043. The reversal of 21201310122030 is 3022101310212.

21201310122030 is a `hidden beast` number, since 2 + 1 + 201 + 310 + 122 + 0 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21201310121994 and 21201310122012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285891396 + ... + 285965544.

It is an arithmetic number, because the mean of its divisors is an integer number (575000994750).

Almost surely, 2^{21201310122030} is an apocalyptic number.

21201310122030 is an abundant number, since it is smaller than the sum of its proper divisors (33998785373970).

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

21201310122030 is a wasteful number, since it uses less digits than its factorization.

21201310122030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78538 (or 78535 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21201310122030 its reverse (3022101310212), we get a palindrome (24223411432242).

The spelling of 21201310122030 in words is "twenty-one trillion, two hundred one billion, three hundred ten million, one hundred twenty-two thousand, thirty".