221202211122120 has 64 divisors (see below), whose sum is σ = 664007120766720. Its totient is φ = 58951657419264.

The previous prime is 221202211122103. The next prime is 221202211122163. The reversal of 221202211122120 is 21221112202122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556032832 + ... + 556430511.

It is an arithmetic number, because the mean of its divisors is an integer number (10375111261980).

Almost surely, 2^{221202211122120} is an apocalyptic number.

221202211122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221202211122120 is an abundant number, since it is smaller than the sum of its proper divisors (442804909644600).

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

221202211122120 is a wasteful number, since it uses less digits than its factorization.

221202211122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112465014 (or 1112465010 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221202211122120 its reverse (21221112202122), we get a palindrome (242423323324242).

The spelling of 221202211122120 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty".