202210121211998 has 4 divisors (see below), whose sum is σ = 303315181818000. Its totient is φ = 101105060605998.

The previous prime is 202210121211997. The next prime is 202210121212031. The reversal of 202210121211998 is 899112121012202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210121211997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50552530302998 + ... + 50552530303001.

It is an arithmetic number, because the mean of its divisors is an integer number (75828795454500).

Almost surely, 2^{202210121211998} is an apocalyptic number.

202210121211998 is a deficient number, since it is larger than the sum of its proper divisors (101105060606002).

202210121211998 is a wasteful number, since it uses less digits than its factorization.

202210121211998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101105060606001.

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 202210121211998 in words is "two hundred two trillion, two hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred ninety-eight".