12121011151 has 8 divisors (see below), whose sum is σ = 12208138704. Its totient is φ = 12034196160.

The previous prime is 12121011143. The next prime is 12121011167. The reversal of 12121011151 is 15111012121.

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 12121011151 - 2³ = 12121011143 is a prime.

It is a super-2 number, since 2×12121011151² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 155698.

It is an arithmetic number, because the mean of its divisors is an integer number (1526017338).

Almost surely, 2^12121011151 is an apocalyptic number.

12121011151 is a deficient number, since it is larger than the sum of its proper divisors (87127553).

12121011151 is a wasteful number, since it uses less digits than its factorization.

12121011151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156281.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 12121011151 its reverse (15111012121), we get a palindrome (27232023272).

The spelling of 12121011151 in words is "twelve billion, one hundred twenty-one million, eleven thousand, one hundred fifty-one".