222021210021 has 8 divisors (see below), whose sum is σ = 318799686240. Its totient is φ = 136628436912.

The previous prime is 222021210013. The next prime is 222021210023. The reversal of 222021210021 is 120012120222.

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

It is not a de Polignac number, because 222021210021 - 2³ = 222021210013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021210023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846425731 + ... + 2846425808.

It is an arithmetic number, because the mean of its divisors is an integer number (39849960780).

Almost surely, 2^222021210021 is an apocalyptic number.

It is an amenable number.

222021210021 is a deficient number, since it is larger than the sum of its proper divisors (96778476219).

222021210021 is a wasteful number, since it uses less digits than its factorization.

222021210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692851555.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222021210021 its reverse (120012120222), we get a palindrome (342033330243).

The spelling of 222021210021 in words is "two hundred twenty-two billion, twenty-one million, two hundred ten thousand, twenty-one".