222121100020212 has 48 divisors (see below), whose sum is σ = 577721189136000. Its totient is φ = 73802294743680.

The previous prime is 222121100020201. The next prime is 222121100020243. The reversal of 222121100020212 is 212020001121222.

It is a happy number.

222121100020212 is a `hidden beast` number, since 2 + 221 + 211 + 0 + 0 + 0 + 20 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 3306520837 + ... + 3306588012.

It is an arithmetic number, because the mean of its divisors is an integer number (12035858107000).

Almost surely, 2^{222121100020212} is an apocalyptic number.

It is an amenable number.

222121100020212 is an abundant number, since it is smaller than the sum of its proper divisors (355600089115788).

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

222121100020212 is a wasteful number, since it uses less digits than its factorization.

222121100020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613109173 (or 6613109165 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222121100020212 its reverse (212020001121222), we get a palindrome (434141101141434).

The spelling of 222121100020212 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred million, twenty thousand, two hundred twelve".