1212021110113 has 8 divisors (see below), whose sum is σ = 1327472598816. Its totient is φ = 1097447580000.

The previous prime is 1212021110101. The next prime is 1212021110119. The reversal of 1212021110113 is 3110111202121.

It is a happy number.

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 1212021110113 - 2²¹ = 1212019012961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212021110119) 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, 219486756 + ... + 219492277.

It is an arithmetic number, because the mean of its divisors is an integer number (165934074852).

Almost surely, 2^{1212021110113} is an apocalyptic number.

It is an amenable number.

1212021110113 is a deficient number, since it is larger than the sum of its proper divisors (115451488703).

1212021110113 is a wasteful number, since it uses less digits than its factorization.

1212021110113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438979295.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1212021110113 its reverse (3110111202121), we get a palindrome (4322132312234).

The spelling of 1212021110113 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred ten thousand, one hundred thirteen".