1212020100011 has 32 divisors (see below), whose sum is σ = 1445586075648. Its totient is φ = 994322005920.

The previous prime is 1212020099977. The next prime is 1212020100023. The reversal of 1212020100011 is 1100010202121.

It is a cyclic number.

It is not a de Polignac number, because 1212020100011 - 2¹⁰ = 1212020098987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212020099965 and 1212020100001.

It is not an unprimeable number, because it can be changed into a prime (1212020100061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17555786 + ... + 17624688.

It is an arithmetic number, because the mean of its divisors is an integer number (45174564864).

Almost surely, 2^{1212020100011} is an apocalyptic number.

1212020100011 is a deficient number, since it is larger than the sum of its proper divisors (233565975637).

1212020100011 is a wasteful number, since it uses less digits than its factorization.

1212020100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69831.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212020100011 its reverse (1100010202121), we get a palindrome (2312030302132).

The spelling of 1212020100011 in words is "one trillion, two hundred twelve billion, twenty million, one hundred thousand, eleven".