22430200121 has 4 divisors (see below), whose sum is σ = 25634514432. Its totient is φ = 19225885812.

The previous prime is 22430200103. The next prime is 22430200127. The reversal of 22430200121 is 12100203422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12100203422 = 2 ⋅6050101711.

It is a de Polignac number, because none of the positive numbers 2^k-22430200121 is a prime.

It is a super-2 number, since 2×22430200121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22430200121.

It is not an unprimeable number, because it can be changed into a prime (22430200127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602157145 + ... + 1602157158.

It is an arithmetic number, because the mean of its divisors is an integer number (6408628608).

Almost surely, 2^22430200121 is an apocalyptic number.

It is an amenable number.

22430200121 is a deficient number, since it is larger than the sum of its proper divisors (3204314311).

22430200121 is an equidigital number, since it uses as much as digits as its factorization.

22430200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204314310.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22430200121 its reverse (12100203422), we get a palindrome (34530403543).

The spelling of 22430200121 in words is "twenty-two billion, four hundred thirty million, two hundred thousand, one hundred twenty-one".