2121100121222 has 8 divisors (see below), whose sum is σ = 3368806074936. Its totient is φ = 998164762912.

The previous prime is 2121100121183. The next prime is 2121100121251. The reversal of 2121100121222 is 2221210011212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2121100121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31192648808 + ... + 31192648875.

It is an arithmetic number, because the mean of its divisors is an integer number (421100759367).

Almost surely, 2^{2121100121222} is an apocalyptic number.

2121100121222 is a deficient number, since it is larger than the sum of its proper divisors (1247705953714).

2121100121222 is a wasteful number, since it uses less digits than its factorization.

2121100121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62385297702.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121100121222 its reverse (2221210011212), we get a palindrome (4342310132434).

The spelling of 2121100121222 in words is "two trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-two".