12121102011 has 8 divisors (see below), whose sum is σ = 16321484304. Its totient is φ = 8000727200.

The previous prime is 12121101919. The next prime is 12121102033. The reversal of 12121102011 is 11020112121.

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 12121102011 - 2¹³ = 12121093819 is a prime.

It is a super-2 number, since 2×12121102011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121102111) 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, 20001516 + ... + 20002121.

It is an arithmetic number, because the mean of its divisors is an integer number (2040185538).

Almost surely, 2^12121102011 is an apocalyptic number.

12121102011 is a deficient number, since it is larger than the sum of its proper divisors (4200382293).

12121102011 is a wasteful number, since it uses less digits than its factorization.

12121102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40003741.

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

Adding to 12121102011 its reverse (11020112121), we get a palindrome (23141214132).

It can be divided in two parts, 1212110 and 2011, that added together give a palindrome (1214121).

The spelling of 12121102011 in words is "twelve billion, one hundred twenty-one million, one hundred two thousand, eleven".