12011111021010 has 64 divisors (see below), whose sum is σ = 28845673758720. Its totient is φ = 3200851515840.

The previous prime is 12011111021009. The next prime is 12011111021011. The reversal of 12011111021010 is 1012011111021.

It is an interprime number because it is at equal distance from previous prime (12011111021009) and next prime (12011111021011).

It is a super-2 number, since 2×12011111021010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12011111021011) 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, 689532081 + ... + 689549499.

It is an arithmetic number, because the mean of its divisors is an integer number (450713652480).

Almost surely, 2^{12011111021010} is an apocalyptic number.

12011111021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011111021010 is an abundant number, since it is smaller than the sum of its proper divisors (16834562737710).

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

12011111021010 is a wasteful number, since it uses less digits than its factorization.

12011111021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31263.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12011111021010 its reverse (1012011111021), we get a palindrome (13023122132031).

The spelling of 12011111021010 in words is "twelve trillion, eleven billion, one hundred eleven million, twenty-one thousand, ten".