10721011701225 has 24 divisors (see below), whose sum is σ = 20257606872640. Its totient is φ = 4901033920320.

The previous prime is 10721011701223. The next prime is 10721011701241. The reversal of 10721011701225 is 52210711012701.

It is not a de Polignac number, because 10721011701225 - 2¹ = 10721011701223 is a prime.

It is a super-2 number, since 2×10721011701225² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10721011701192 and 10721011701201.

It is not an unprimeable number, because it can be changed into a prime (10721011701221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10210486810 + ... + 10210487859.

Almost surely, 2^{10721011701225} is an apocalyptic number.

10721011701225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10721011701225 is a deficient number, since it is larger than the sum of its proper divisors (9536595171415).

10721011701225 is a wasteful number, since it uses less digits than its factorization.

10721011701225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20420974689 (or 20420974684 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 30.

Adding to 10721011701225 its reverse (52210711012701), we get a palindrome (62931722713926).

The spelling of 10721011701225 in words is "ten trillion, seven hundred twenty-one billion, eleven million, seven hundred one thousand, two hundred twenty-five".