20012222021102 has 4 divisors (see below), whose sum is σ = 30018333031656. Its totient is φ = 10006111010550.

The previous prime is 20012222021089. The next prime is 20012222021131. The reversal of 20012222021102 is 20112022221002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003055505274 + ... + 5003055505277.

It is an arithmetic number, because the mean of its divisors is an integer number (7504583257914).

Almost surely, 2^{20012222021102} is an apocalyptic number.

20012222021102 is a deficient number, since it is larger than the sum of its proper divisors (10006111010554).

20012222021102 is a wasteful number, since it uses less digits than its factorization.

20012222021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006111010553.

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

Adding to 20012222021102 its reverse (20112022221002), we get a palindrome (40124244242104).

The spelling of 20012222021102 in words is "twenty trillion, twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred two".