121112102222222 has 4 divisors (see below), whose sum is σ = 181668153333336. Its totient is φ = 60556051111110.

The previous prime is 121112102222129. The next prime is 121112102222227. The reversal of 121112102222222 is 222222201211121.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×121112102222222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112102222227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30278025555554 + ... + 30278025555557.

It is an arithmetic number, because the mean of its divisors is an integer number (45417038333334).

Almost surely, 2^{121112102222222} is an apocalyptic number.

121112102222222 is a deficient number, since it is larger than the sum of its proper divisors (60556051111114).

121112102222222 is an equidigital number, since it uses as much as digits as its factorization.

121112102222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60556051111113.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121112102222222 its reverse (222222201211121), we get a palindrome (343334303433343).

The spelling of 121112102222222 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-two".