20210123312222 has 4 divisors (see below), whose sum is σ = 30315184968336. Its totient is φ = 10105061656110.

The previous prime is 20210123312213. The next prime is 20210123312251. The reversal of 20210123312222 is 22221332101202.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052530828054 + ... + 5052530828057.

It is an arithmetic number, because the mean of its divisors is an integer number (7578796242084).

Almost surely, 2^{20210123312222} is an apocalyptic number.

20210123312222 is a deficient number, since it is larger than the sum of its proper divisors (10105061656114).

20210123312222 is a wasteful number, since it uses less digits than its factorization.

20210123312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105061656113.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20210123312222 its reverse (22221332101202), we get a palindrome (42431455413424).

The spelling of 20210123312222 in words is "twenty trillion, two hundred ten billion, one hundred twenty-three million, three hundred twelve thousand, two hundred twenty-two".