20021220202 has 8 divisors (see below), whose sum is σ = 30261081312. Its totient is φ = 9934193100.

The previous prime is 20021220199. The next prime is 20021220217. The reversal of 20021220202 is 20202212002.

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, 38208174 + ... + 38208697.

It is an arithmetic number, because the mean of its divisors is an integer number (3782635164).

Almost surely, 2^20021220202 is an apocalyptic number.

20021220202 is a deficient number, since it is larger than the sum of its proper divisors (10239861110).

20021220202 is a wasteful number, since it uses less digits than its factorization.

20021220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76417004.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20021220202 its reverse (20202212002), we get a palindrome (40223432204).

The spelling of 20021220202 in words is "twenty billion, twenty-one million, two hundred twenty thousand, two hundred two".