20021003222002 has 4 divisors (see below), whose sum is σ = 30031504833006. Its totient is φ = 10010501611000.

The previous prime is 20021003221991. The next prime is 20021003222023. The reversal of 20021003222002 is 20022230012002.

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., 15567514733761 + 4453488488241 = 3945569^2 + 2110329^2 .

It is a super-4 number, since 4×20021003222002⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005250805499 + ... + 5005250805502.

Almost surely, 2^{20021003222002} is an apocalyptic number.

20021003222002 is a deficient number, since it is larger than the sum of its proper divisors (10010501611004).

20021003222002 is a wasteful number, since it uses less digits than its factorization.

20021003222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010501611003.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20021003222002 its reverse (20022230012002), we get a palindrome (40043233234004).

The spelling of 20021003222002 in words is "twenty trillion, twenty-one billion, three million, two hundred twenty-two thousand, two".