12101220148 has 12 divisors (see below), whose sum is σ = 21749490532. Its totient is φ = 5887080000.

The previous prime is 12101220119. The next prime is 12101220149. The reversal of 12101220148 is 84102210121.

It can be written as a sum of positive squares in 2 ways, for example, as 5771744784 + 6329475364 = 75972^2 + 79558^2 .

It is a super-2 number, since 2×12101220148² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101220149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40882353 + ... + 40882648.

Almost surely, 2^12101220148 is an apocalyptic number.

It is an amenable number.

12101220148 is a deficient number, since it is larger than the sum of its proper divisors (9648270384).

12101220148 is a wasteful number, since it uses less digits than its factorization.

12101220148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81765042 (or 81765040 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 12101220148 its reverse (84102210121), we get a palindrome (96203430269).

The spelling of 12101220148 in words is "twelve billion, one hundred one million, two hundred twenty thousand, one hundred forty-eight".