1212211012101 has 8 divisors (see below), whose sum is σ = 1616291903520. Its totient is φ = 808135397712.

The previous prime is 1212211012097. The next prime is 1212211012151. The reversal of 1212211012101 is 1012101122121.

It is a happy number.

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

It is not a de Polignac number, because 1212211012101 - 2² = 1212211012097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212211012151) 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, 747906 + ... + 1727363.

It is an arithmetic number, because the mean of its divisors is an integer number (202036487940).

Almost surely, 2^{1212211012101} is an apocalyptic number.

It is an amenable number.

1212211012101 is a deficient number, since it is larger than the sum of its proper divisors (404080891419).

1212211012101 is a wasteful number, since it uses less digits than its factorization.

1212211012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638515.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212211012101 its reverse (1012101122121), we get a palindrome (2224312134222).

The spelling of 1212211012101 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twelve thousand, one hundred one".