213022254540 has 48 divisors (see below), whose sum is σ = 596513604960. Its totient is φ = 56801049600.

The previous prime is 213022254539. The next prime is 213022254551. The reversal of 213022254540 is 45452220312.

213022254540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213022254540² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 213022254498 and 213022254507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579940 + ... + 873140.

It is an arithmetic number, because the mean of its divisors is an integer number (12427366770).

Almost surely, 2^213022254540 is an apocalyptic number.

213022254540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213022254540 is an abundant number, since it is smaller than the sum of its proper divisors (383491350420).

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

213022254540 is a wasteful number, since it uses less digits than its factorization.

213022254540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305322 (or 305320 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 213022254540 its reverse (45452220312), we get a palindrome (258474474852).

The spelling of 213022254540 in words is "two hundred thirteen billion, twenty-two million, two hundred fifty-four thousand, five hundred forty".