20121121002 has 32 divisors (see below), whose sum is σ = 40431359232. Its totient is φ = 6675574464.

The previous prime is 20121120983. The next prime is 20121121057. The reversal of 20121121002 is 20012112102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650943 + ... + 1663085.

It is an arithmetic number, because the mean of its divisors is an integer number (1263479976).

Almost surely, 2^20121121002 is an apocalyptic number.

20121121002 is an abundant number, since it is smaller than the sum of its proper divisors (20310238230).

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

20121121002 is a wasteful number, since it uses less digits than its factorization.

20121121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13422.

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

Adding to 20121121002 its reverse (20012112102), we get a palindrome (40133233104).

It can be divided in two parts, 2012112100 and 2, that added together give a palindrome (2012112102).

The spelling of 20121121002 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, two".