101543215121 has 8 divisors (see below), whose sum is σ = 101757797064. Its totient is φ = 101328860160.

The previous prime is 101543215091. The next prime is 101543215127. The reversal of 101543215121 is 121512345101.

It can be written as a sum of positive squares in 4 ways, for example, as 15021934096 + 86521281025 = 122564^2 + 294145^2 .

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 101543215121 - 2⁶ = 101543215057 is a prime.

It is a super-2 number, since 2×101543215121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101543215127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854285 + ... + 965861.

It is an arithmetic number, because the mean of its divisors is an integer number (12719724633).

Almost surely, 2^101543215121 is an apocalyptic number.

It is an amenable number.

101543215121 is a deficient number, since it is larger than the sum of its proper divisors (214581943).

101543215121 is a wasteful number, since it uses less digits than its factorization.

101543215121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 101543215121 in words is "one hundred one billion, five hundred forty-three million, two hundred fifteen thousand, one hundred twenty-one".