20121100022 has 8 divisors (see below), whose sum is σ = 30206784072. Its totient is φ = 10052172000.

The previous prime is 20121100003. The next prime is 20121100079. The reversal of 20121100022 is 22000112102.

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 = 20121099976 and 20121100012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4186004 + ... + 4190807.

It is an arithmetic number, because the mean of its divisors is an integer number (3775848009).

Almost surely, 2^20121100022 is an apocalyptic number.

20121100022 is a deficient number, since it is larger than the sum of its proper divisors (10085684050).

20121100022 is a wasteful number, since it uses less digits than its factorization.

20121100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8378014.

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

Adding to 20121100022 its reverse (22000112102), we get a palindrome (42121212124).

The spelling of 20121100022 in words is "twenty billion, one hundred twenty-one million, one hundred thousand, twenty-two".