20211121002 has 16 divisors (see below), whose sum is σ = 40429220832. Its totient is φ = 6735877200.

The previous prime is 20211120991. The next prime is 20211121013. The reversal of 20211121002 is 20012111202.

It is an interprime number because it is at equal distance from previous prime (20211120991) and next prime (20211121013).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 252753 + ... + 322964.

It is an arithmetic number, because the mean of its divisors is an integer number (2526826302).

Almost surely, 2^20211121002 is an apocalyptic number.

20211121002 is an abundant number, since it is smaller than the sum of its proper divisors (20218099830).

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

20211121002 is a wasteful number, since it uses less digits than its factorization.

20211121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581573.

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

Adding to 20211121002 its reverse (20012111202), we get a palindrome (40223232204).

The spelling of 20211121002 in words is "twenty billion, two hundred eleven million, one hundred twenty-one thousand, two".