1212101212011 has 8 divisors (see below), whose sum is σ = 1616148308544. Its totient is φ = 808060795080.

The previous prime is 1212101211967. The next prime is 1212101212037. The reversal of 1212101212011 is 1102121012121.

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 1212101212011 - 2¹⁵ = 1212101179243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212101212411) 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, 1229925 + ... + 1984166.

It is an arithmetic number, because the mean of its divisors is an integer number (202018538568).

Almost surely, 2^{1212101212011} is an apocalyptic number.

1212101212011 is a deficient number, since it is larger than the sum of its proper divisors (404047096533).

1212101212011 is a wasteful number, since it uses less digits than its factorization.

1212101212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339801.

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

Adding to 1212101212011 its reverse (1102121012121), we get a palindrome (2314222224132).

The spelling of 1212101212011 in words is "one trillion, two hundred twelve billion, one hundred one million, two hundred twelve thousand, eleven".