213102022340 has 24 divisors (see below), whose sum is σ = 447549287640. Its totient is φ = 85234134528.

The previous prime is 213102022327. The next prime is 213102022361. The reversal of 213102022340 is 43220201312.

It can be written as a sum of positive squares in 4 ways, for example, as 18587504896 + 194514517444 = 136336^2 + 441038^2 .

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 7 ways as a sum of consecutive naturals, for example, 151205 + ... + 670124.

It is an arithmetic number, because the mean of its divisors is an integer number (18647886985).

Almost surely, 2^213102022340 is an apocalyptic number.

213102022340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213102022340 is an abundant number, since it is smaller than the sum of its proper divisors (234447265300).

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

213102022340 is a wasteful number, since it uses less digits than its factorization.

213102022340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834311 (or 834309 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213102022340 its reverse (43220201312), we get a palindrome (256322223652).

The spelling of 213102022340 in words is "two hundred thirteen billion, one hundred two million, twenty-two thousand, three hundred forty".