213121001122 has 32 divisors (see below), whose sum is σ = 330156129600. Its totient is φ = 103136760000.

The previous prime is 213121001117. The next prime is 213121001129. The reversal of 213121001122 is 221100121312.

It is a super-2 number, since 2×213121001122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213121001096 and 213121001105.

It is not an unprimeable number, because it can be changed into a prime (213121001129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2083372 + ... + 2183272.

It is an arithmetic number, because the mean of its divisors is an integer number (10317379050).

Almost surely, 2^213121001122 is an apocalyptic number.

213121001122 is a deficient number, since it is larger than the sum of its proper divisors (117035128478).

213121001122 is a wasteful number, since it uses less digits than its factorization.

213121001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100242.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213121001122 its reverse (221100121312), we get a palindrome (434221122434).

The spelling of 213121001122 in words is "two hundred thirteen billion, one hundred twenty-one million, one thousand, one hundred twenty-two".