213131121022 has 8 divisors (see below), whose sum is σ = 338502368736. Its totient is φ = 100296998112.

The previous prime is 213131121013. The next prime is 213131121031. The reversal of 213131121022 is 220121131312.

It is an interprime number because it is at equal distance from previous prime (213131121013) and next prime (213131121031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134281158 + ... + 3134281225.

It is an arithmetic number, because the mean of its divisors is an integer number (42312796092).

Almost surely, 2^213131121022 is an apocalyptic number.

213131121022 is a deficient number, since it is larger than the sum of its proper divisors (125371247714).

213131121022 is a wasteful number, since it uses less digits than its factorization.

213131121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268562402.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213131121022 its reverse (220121131312), we get a palindrome (433252252334).

It can be divided in two parts, 213131 and 121022, that added together give a triangular number (334153 = T₈₁₇).

The spelling of 213131121022 in words is "two hundred thirteen billion, one hundred thirty-one million, one hundred twenty-one thousand, twenty-two".