20021820002 has 8 divisors (see below), whose sum is σ = 30269208576. Its totient is φ = 9932083812.

The previous prime is 20021819971. The next prime is 20021820029. The reversal of 20021820002 is 20002812002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39412778 + ... + 39413285.

It is an arithmetic number, because the mean of its divisors is an integer number (3783651072).

Almost surely, 2^20021820002 is an apocalyptic number.

20021820002 is a deficient number, since it is larger than the sum of its proper divisors (10247388574).

20021820002 is a wasteful number, since it uses less digits than its factorization.

20021820002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78826192.

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 20021820002 in words is "twenty billion, twenty-one million, eight hundred twenty thousand, two".