210021221122 has 8 divisors (see below), whose sum is σ = 315076608000. Its totient is φ = 104995685124.

The previous prime is 210021221083. The next prime is 210021221173. The reversal of 210021221122 is 221122120012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 210021221096 and 210021221105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7445122 + ... + 7473277.

It is an arithmetic number, because the mean of its divisors is an integer number (39384576000).

Almost surely, 2^210021221122 is an apocalyptic number.

210021221122 is a deficient number, since it is larger than the sum of its proper divisors (105055386878).

210021221122 is a wasteful number, since it uses less digits than its factorization.

210021221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14925440.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210021221122 its reverse (221122120012), we get a palindrome (431143341134).

The spelling of 210021221122 in words is "two hundred ten billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".