20101211002 has 4 divisors (see below), whose sum is σ = 30151816506. Its totient is φ = 10050605500.

The previous prime is 20101210993. The next prime is 20101211017. The reversal of 20101211002 is 20011210102.

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., 16965323001 + 3135888001 = 130251^2 + 55999^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20101211002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025302749 + ... + 5025302752.

Almost surely, 2^20101211002 is an apocalyptic number.

20101211002 is a deficient number, since it is larger than the sum of its proper divisors (10050605504).

20101211002 is a wasteful number, since it uses less digits than its factorization.

20101211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050605503.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101211002 its reverse (20011210102), we get a palindrome (40112421104).

The spelling of 20101211002 in words is "twenty billion, one hundred one million, two hundred eleven thousand, two".