20121001022 has 8 divisors (see below), whose sum is σ = 30188964072. Its totient is φ = 10058013000.

The previous prime is 20121000989. The next prime is 20121001027. The reversal of 20121001022 is 22010012102.

It is a happy number.

20121001022 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 = 20121000994 and 20121001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121001027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233629 + ... + 1249832.

It is an arithmetic number, because the mean of its divisors is an integer number (3773620509).

Almost surely, 2^20121001022 is an apocalyptic number.

20121001022 is a deficient number, since it is larger than the sum of its proper divisors (10067963050).

20121001022 is a wasteful number, since it uses less digits than its factorization.

20121001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487514.

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

Adding to 20121001022 its reverse (22010012102), we get a palindrome (42131013124).

The spelling of 20121001022 in words is "twenty billion, one hundred twenty-one million, one thousand, twenty-two".