20012211101002 has 4 divisors (see below), whose sum is σ = 30018316651506. Its totient is φ = 10006105550500.

The previous prime is 20012211100963. The next prime is 20012211101131. The reversal of 20012211101002 is 20010111221002.

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., 19783182813241 + 229028287761 = 4447829^2 + 478569^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003052775249 + ... + 5003052775252.

Almost surely, 2^{20012211101002} is an apocalyptic number.

20012211101002 is a deficient number, since it is larger than the sum of its proper divisors (10006105550504).

20012211101002 is a wasteful number, since it uses less digits than its factorization.

20012211101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006105550503.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012211101002 its reverse (20010111221002), we get a palindrome (40022322322004).

The spelling of 20012211101002 in words is "twenty trillion, twelve billion, two hundred eleven million, one hundred one thousand, two".