20111122206998 has 4 divisors (see below), whose sum is σ = 30166683310500. Its totient is φ = 10055561103498.

The previous prime is 20111122206991. The next prime is 20111122207027. The reversal of 20111122206998 is 89960222111102.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111122206991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027780551748 + ... + 5027780551751.

It is an arithmetic number, because the mean of its divisors is an integer number (7541670827625).

Almost surely, 2^{20111122206998} is an apocalyptic number.

20111122206998 is a deficient number, since it is larger than the sum of its proper divisors (10055561103502).

20111122206998 is a wasteful number, since it uses less digits than its factorization.

20111122206998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055561103501.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 20111122206998 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, two hundred six thousand, nine hundred ninety-eight".