20121101022 has 32 divisors (see below), whose sum is σ = 44335257984. Its totient is φ = 6036932000.

The previous prime is 20121100991. The next prime is 20121101027. The reversal of 20121101022 is 22010112102.

It is a junction number, because it is equal to n+sod(n) for n = 20121100989 and 20121101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121101027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502568 + ... + 1515899.

It is an arithmetic number, because the mean of its divisors is an integer number (1385476812).

Almost surely, 2^20121101022 is an apocalyptic number.

20121101022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121101022 is an abundant number, since it is smaller than the sum of its proper divisors (24214156962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121101022 is a wasteful number, since it uses less digits than its factorization.

20121101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018584.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20121101022 its reverse (22010112102), we get a palindrome (42131213124).

The spelling of 20121101022 in words is "twenty billion, one hundred twenty-one million, one hundred one thousand, twenty-two".