126642621212 has 6 divisors (see below), whose sum is σ = 221624587128. Its totient is φ = 63321310604.

The previous prime is 126642621199. The next prime is 126642621221. The reversal of 126642621212 is 212126246621.

It is a super-2 number, since 2×126642621212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15830327648 + ... + 15830327655.

It is an arithmetic number, because the mean of its divisors is an integer number (36937431188).

Almost surely, 2^126642621212 is an apocalyptic number.

It is an amenable number.

126642621212 is a deficient number, since it is larger than the sum of its proper divisors (94981965916).

126642621212 is a wasteful number, since it uses less digits than its factorization.

126642621212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31660655307 (or 31660655305 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

Adding to 126642621212 its reverse (212126246621), we get a palindrome (338768867833).

The spelling of 126642621212 in words is "one hundred twenty-six billion, six hundred forty-two million, six hundred twenty-one thousand, two hundred twelve".