10212040415661 has 16 divisors (see below), whose sum is σ = 15562212069888. Its totient is φ = 5835073806000.

The previous prime is 10212040415657. The next prime is 10212040415711. The reversal of 10212040415661 is 16651404021201.

It is not a de Polignac number, because 10212040415661 - 2² = 10212040415657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212040415651) 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, 15411975 + ... + 16060916.

It is an arithmetic number, because the mean of its divisors is an integer number (972638254368).

Almost surely, 2^{10212040415661} is an apocalyptic number.

It is an amenable number.

10212040415661 is a deficient number, since it is larger than the sum of its proper divisors (5350171654227).

10212040415661 is a wasteful number, since it uses less digits than its factorization.

10212040415661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31488352.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 10212040415661 its reverse (16651404021201), we get a palindrome (26863444436862).

The spelling of 10212040415661 in words is "ten trillion, two hundred twelve billion, forty million, four hundred fifteen thousand, six hundred sixty-one".