1212001222101 has 8 divisors (see below), whose sum is σ = 1618388636064. Its totient is φ = 806807311440.

The previous prime is 1212001222079. The next prime is 1212001222109. The reversal of 1212001222101 is 1012221002121.

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

It is not a de Polignac number, because 1212001222101 - 2¹³ = 1212001213909 is a prime.

It is a super-3 number, since 3×1212001222101³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001222109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298373455 + ... + 298377516.

It is an arithmetic number, because the mean of its divisors is an integer number (202298579508).

Almost surely, 2^{1212001222101} is an apocalyptic number.

It is an amenable number.

1212001222101 is a deficient number, since it is larger than the sum of its proper divisors (406387413963).

1212001222101 is an equidigital number, since it uses as much as digits as its factorization.

1212001222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596751651.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212001222101 its reverse (1012221002121), we get a palindrome (2224222224222).

The spelling of 1212001222101 in words is "one trillion, two hundred twelve billion, one million, two hundred twenty-two thousand, one hundred one".