20021120002 has 32 divisors (see below), whose sum is σ = 34602160320. Its totient is φ = 8610649920.

The previous prime is 20021119973. The next prime is 20021120027. The reversal of 20021120002 is 20002112002.

It is a super-2 number, since 2×20021120002² (a number of 21 digits) contains 22 as substring.

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, 302068 + ... + 362335.

It is an arithmetic number, because the mean of its divisors is an integer number (1081317510).

Almost surely, 2^20021120002 is an apocalyptic number.

20021120002 is a deficient number, since it is larger than the sum of its proper divisors (14581040318).

20021120002 is a wasteful number, since it uses less digits than its factorization.

20021120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664498.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20021120002 its reverse (20002112002), we get a palindrome (40023232004).

It can be divided in two parts, 2002112000 and 2, that added together give a palindrome (2002112002).

The spelling of 20021120002 in words is "twenty billion, twenty-one million, one hundred twenty thousand, two".