22101221210000 has 100 divisors (see below), whose sum is σ = 53511578313600. Its totient is φ = 8840106576000.

The previous prime is 22101221209997. The next prime is 22101221210009. The reversal of 22101221210000 is 1212210122.

It is a tau number, because it is divible by the number of its divisors (100).

It is not an unprimeable number, because it can be changed into a prime (22101221210009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 394361981 + ... + 394418019.

It is an arithmetic number, because the mean of its divisors is an integer number (535115783136).

Almost surely, 2^{22101221210000} is an apocalyptic number.

22101221210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101221210000 is an abundant number, since it is smaller than the sum of its proper divisors (31410357103600).

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

22101221210000 is an equidigital number, since it uses as much as digits as its factorization.

22101221210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95506 (or 95485 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22101221210000 its reverse (1212210122), we get a palindrome (22102433420122).

The spelling of 22101221210000 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-one million, two hundred ten thousand".