102070712721 has 16 divisors (see below), whose sum is σ = 140847356160. Its totient is φ = 65672611200.

The previous prime is 102070712719. The next prime is 102070712743. The reversal of 102070712721 is 127217070201.

It is not a de Polignac number, because 102070712721 - 2¹ = 102070712719 is a prime.

It is a super-3 number, since 3×102070712721³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (102070712321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44980 + ... + 454053.

It is an arithmetic number, because the mean of its divisors is an integer number (8802959760).

Almost surely, 2^102070712721 is an apocalyptic number.

It is an amenable number.

102070712721 is a deficient number, since it is larger than the sum of its proper divisors (38776643439).

102070712721 is a wasteful number, since it uses less digits than its factorization.

102070712721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501416.

The product of its (nonzero) digits is 2744, while the sum is 30.

Adding to 102070712721 its reverse (127217070201), we get a palindrome (229287782922).

The spelling of 102070712721 in words is "one hundred two billion, seventy million, seven hundred twelve thousand, seven hundred twenty-one".