2121252234213 has 32 divisors (see below), whose sum is σ = 3423831932160. Its totient is φ = 1140405765120.

The previous prime is 2121252234193. The next prime is 2121252234217. The reversal of 2121252234213 is 3124322521212.

It is a happy number.

It is not a de Polignac number, because 2121252234213 - 2¹⁷ = 2121252103141 is a prime.

It is a super-2 number, since 2×2121252234213² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121252234217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197818 + ... + 2069211.

It is an arithmetic number, because the mean of its divisors is an integer number (106994747880).

Almost surely, 2^{2121252234213} is an apocalyptic number.

It is an amenable number.

2121252234213 is a deficient number, since it is larger than the sum of its proper divisors (1302579697947).

2121252234213 is a wasteful number, since it uses less digits than its factorization.

2121252234213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269677.

The product of its digits is 11520, while the sum is 30.

Adding to 2121252234213 its reverse (3124322521212), we get a palindrome (5245574755425).

The spelling of 2121252234213 in words is "two trillion, one hundred twenty-one billion, two hundred fifty-two million, two hundred thirty-four thousand, two hundred thirteen".