222210202121220 has 48 divisors (see below), whose sum is σ = 623538215834688. Its totient is φ = 59127515813760.

The previous prime is 222210202121203. The next prime is 222210202121233. The reversal of 222210202121220 is 22121202012222.

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, 4016787274 + ... + 4016842593.

It is an arithmetic number, because the mean of its divisors is an integer number (12990379496556).

Almost surely, 2^{222210202121220} is an apocalyptic number.

222210202121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222210202121220 is an abundant number, since it is smaller than the sum of its proper divisors (401328013713468).

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

222210202121220 is a wasteful number, since it uses less digits than its factorization.

222210202121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8033630340 (or 8033630338 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222210202121220 its reverse (22121202012222), we get a palindrome (244331404133442).

The spelling of 222210202121220 in words is "two hundred twenty-two trillion, two hundred ten billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty".