222001211020 has 24 divisors (see below), whose sum is σ = 472768779168. Its totient is φ = 87549772800.

The previous prime is 222001211009. The next prime is 222001211021. The reversal of 222001211020 is 20112100222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222001211021) 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, 78168021 + ... + 78170860.

It is an arithmetic number, because the mean of its divisors is an integer number (19698699132).

Almost surely, 2^222001211020 is an apocalyptic number.

222001211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222001211020 is an abundant number, since it is smaller than the sum of its proper divisors (250767568148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222001211020 is a wasteful number, since it uses less digits than its factorization.

222001211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156338961 (or 156338959 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222001211020 its reverse (20112100222), we get a palindrome (242113311242).

The spelling of 222001211020 in words is "two hundred twenty-two billion, one million, two hundred eleven thousand, twenty".