20102010221002 has 4 divisors (see below), whose sum is σ = 30153015331506. Its totient is φ = 10051005110500.

The previous prime is 20102010220997. The next prime is 20102010221009. The reversal of 20102010221002 is 20012201020102.

It is a happy number.

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., 17730407141001 + 2371603080001 = 4210749^2 + 1540001^2 .

It is not an unprimeable number, because it can be changed into a prime (20102010221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025502555249 + ... + 5025502555252.

Almost surely, 2^{20102010221002} is an apocalyptic number.

20102010221002 is a deficient number, since it is larger than the sum of its proper divisors (10051005110504).

20102010221002 is a wasteful number, since it uses less digits than its factorization.

20102010221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051005110503.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20102010221002 its reverse (20012201020102), we get a palindrome (40114211241104).

The spelling of 20102010221002 in words is "twenty trillion, one hundred two billion, ten million, two hundred twenty-one thousand, two".