101021555121412 has 6 divisors (see below), whose sum is σ = 176787721462478. Its totient is φ = 50510777560704.

The previous prime is 101021555121329. The next prime is 101021555121413. The reversal of 101021555121412 is 214121555120101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53071137580036 + 47950417541376 = 7284994^2 + 6924624^2 .

It is not an unprimeable number, because it can be changed into a prime (101021555121413) 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 as a sum of consecutive naturals, namely, 12627694390173 + ... + 12627694390180.

Almost surely, 2^{101021555121412} is an apocalyptic number.

It is an amenable number.

101021555121412 is a deficient number, since it is larger than the sum of its proper divisors (75766166341066).

101021555121412 is a wasteful number, since it uses less digits than its factorization.

101021555121412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25255388780357 (or 25255388780355 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 31.

The spelling of 101021555121412 in words is "one hundred one trillion, twenty-one billion, five hundred fifty-five million, one hundred twenty-one thousand, four hundred twelve".