20021222120002 has 4 divisors (see below), whose sum is σ = 30031833180006. Its totient is φ = 10010611060000.

The previous prime is 20021222119999. The next prime is 20021222120059. The reversal of 20021222120002 is 20002122212002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19361311222201 + 659910897801 = 4400149^2 + 812349^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005305529999 + ... + 5005305530002.

Almost surely, 2^{20021222120002} is an apocalyptic number.

20021222120002 is a deficient number, since it is larger than the sum of its proper divisors (10010611060004).

20021222120002 is a wasteful number, since it uses less digits than its factorization.

20021222120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010611060003.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20021222120002 its reverse (20002122212002), we get a palindrome (40023344332004).

It can be divided in two parts, 2002122212000 and 2, that added together give a palindrome (2002122212002).

The spelling of 20021222120002 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, two".