121212210001222 has 16 divisors (see below), whose sum is σ = 187683712441344. Its totient is φ = 58650978573000.

The previous prime is 121212210001171. The next prime is 121212210001229. The reversal of 121212210001222 is 222100012212121.

It is a self number, because there is not a number n which added to its sum of digits gives 121212210001222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212210001229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56917647 + ... + 59008837.

It is an arithmetic number, because the mean of its divisors is an integer number (11730232027584).

Almost surely, 2^{121212210001222} is an apocalyptic number.

121212210001222 is a deficient number, since it is larger than the sum of its proper divisors (66471502440122).

121212210001222 is a wasteful number, since it uses less digits than its factorization.

121212210001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026115.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121212210001222 its reverse (222100012212121), we get a palindrome (343312222213343).

The spelling of 121212210001222 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred ten million, one thousand, two hundred twenty-two".