222156101210000 has 50 divisors (see below), whose sum is σ = 537862136663742. Its totient is φ = 88862440480000.

The previous prime is 222156101209967. The next prime is 222156101210003. The reversal of 222156101210000 is 12101651222.

It can be written as a sum of positive squares in 5 ways, for example, as 24750903600784 + 197405197609216 = 4975028^2 + 14050096^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (222156101210003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11107795061 + ... + 11107815060.

Almost surely, 2^{222156101210000} is an apocalyptic number.

222156101210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222156101210000 is an abundant number, since it is smaller than the sum of its proper divisors (315706035453742).

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

222156101210000 is an equidigital number, since it uses as much as digits as its factorization.

222156101210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22215610149 (or 22215610128 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 222156101210000 its reverse (12101651222), we get a palindrome (222168202861222).

The spelling of 222156101210000 in words is "two hundred twenty-two trillion, one hundred fifty-six billion, one hundred one million, two hundred ten thousand".