22403012121 has 72 divisors (see below), whose sum is σ = 38309225760. Its totient is φ = 12576622464.

The previous prime is 22403012113. The next prime is 22403012129. The reversal of 22403012121 is 12121030422.

It is a happy number.

22403012121 is a `hidden beast` number, since 2 + 240 + 301 + 2 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (22403012113) and next prime (22403012129).

It is not a de Polignac number, because 22403012121 - 2³ = 22403012113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22403012094 and 22403012103.

It is not an unprimeable number, because it can be changed into a prime (22403012129) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9109390 + ... + 9111848.

It is an arithmetic number, because the mean of its divisors is an integer number (532072580).

Almost surely, 2^22403012121 is an apocalyptic number.

22403012121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22403012121 is a deficient number, since it is larger than the sum of its proper divisors (15906213639).

22403012121 is a wasteful number, since it uses less digits than its factorization.

22403012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835 (or 2825 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22403012121 its reverse (12121030422), we get a palindrome (34524042543).

It can be divided in two parts, 2240301 and 2121, that added together give a palindrome (2242422).

The spelling of 22403012121 in words is "twenty-two billion, four hundred three million, twelve thousand, one hundred twenty-one".