101212120011 has 24 divisors (see below), whose sum is σ = 144884805520. Its totient is φ = 62796672576.

The previous prime is 101212120003. The next prime is 101212120021. The reversal of 101212120011 is 110021212101.

It is not a de Polignac number, because 101212120011 - 2³ = 101212120003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212120001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 803116 + ... + 920553.

Almost surely, 2^101212120011 is an apocalyptic number.

101212120011 is a deficient number, since it is larger than the sum of its proper divisors (43672685509).

101212120011 is a wasteful number, since it uses less digits than its factorization.

101212120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723755 (or 1723732 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101212120011 its reverse (110021212101), we get a palindrome (211233332112).

The spelling of 101212120011 in words is "one hundred one billion, two hundred twelve million, one hundred twenty thousand, eleven".