1212021111114 has 96 divisors (see below), whose sum is σ = 2980561199616. Its totient is φ = 366082279920.

The previous prime is 1212021111113. The next prime is 1212021111131. The reversal of 1212021111114 is 4111111202121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1212021111113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1271979 + ... + 2010465.

It is an arithmetic number, because the mean of its divisors is an integer number (31047512496).

Almost surely, 2^{1212021111114} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212021111114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490280599808).

1212021111114 is an abundant number, since it is smaller than the sum of its proper divisors (1768540088502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212021111114 is a wasteful number, since it uses less digits than its factorization.

1212021111114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738822 (or 738810 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 1212021111114 its reverse (4111111202121), we get a palindrome (5323132313235).

The spelling of 1212021111114 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred eleven thousand, one hundred fourteen".