1212111010101 has 8 divisors (see below), whose sum is σ = 1711215543744. Its totient is φ = 760540241600.

The previous prime is 1212111010051. The next prime is 1212111010111. The reversal of 1212111010101 is 1010101112121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212111010101 - 2⁶ = 1212111010037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212111010111) 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, 11883441225 + ... + 11883441326.

It is an arithmetic number, because the mean of its divisors is an integer number (213901942968).

Almost surely, 2^{1212111010101} is an apocalyptic number.

It is an amenable number.

1212111010101 is a deficient number, since it is larger than the sum of its proper divisors (499104533643).

1212111010101 is a wasteful number, since it uses less digits than its factorization.

1212111010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23766882571.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1212111010101 its reverse (1010101112121), we get a palindrome (2222212122222).

The spelling of 1212111010101 in words is "one trillion, two hundred twelve billion, one hundred eleven million, ten thousand, one hundred one".