12121000022 has 8 divisors (see below), whose sum is σ = 18808448400. Its totient is φ = 5851517224.

The previous prime is 12121000009. The next prime is 12121000033. The reversal of 12121000022 is 22000012121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12120999967 and 12121000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104491322 + ... + 104491437.

It is an arithmetic number, because the mean of its divisors is an integer number (2351056050).

Almost surely, 2^12121000022 is an apocalyptic number.

12121000022 is a deficient number, since it is larger than the sum of its proper divisors (6687448378).

12121000022 is a wasteful number, since it uses less digits than its factorization.

12121000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208982790.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12121000022 its reverse (22000012121), we get a palindrome (34121012143).

The spelling of 12121000022 in words is "twelve billion, one hundred twenty-one million, twenty-two", and thus it is an aban number.