1212102222101 has 4 divisors (see below), whose sum is σ = 1212106759104. Its totient is φ = 1212097685100.

The previous prime is 1212102222077. The next prime is 1212102222131. The reversal of 1212102222101 is 1012222012121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212102222101 - 2²² = 1212098027797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212102222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212102222131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1840895 + ... + 2411036.

It is an arithmetic number, because the mean of its divisors is an integer number (303026689776).

Almost surely, 2^{1212102222101} is an apocalyptic number.

It is an amenable number.

1212102222101 is a deficient number, since it is larger than the sum of its proper divisors (4537003).

1212102222101 is an equidigital number, since it uses as much as digits as its factorization.

1212102222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537002.

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

Adding to 1212102222101 its reverse (1012222012121), we get a palindrome (2224324234222).

The spelling of 1212102222101 in words is "one trillion, two hundred twelve billion, one hundred two million, two hundred twenty-two thousand, one hundred one".