84207761121 has 32 divisors (see below), whose sum is σ = 133872500736. Its totient is φ = 46483488000.

The previous prime is 84207761117. The next prime is 84207761123. The reversal of 84207761121 is 12116770248.

It is not a de Polignac number, because 84207761121 - 2² = 84207761117 is a prime.

It is a super-2 number, since 2×84207761121² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 84207761121.

It is not an unprimeable number, because it can be changed into a prime (84207761123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2403625 + ... + 2438406.

It is an arithmetic number, because the mean of its divisors is an integer number (4183515648).

Almost surely, 2^84207761121 is an apocalyptic number.

It is an amenable number.

84207761121 is a deficient number, since it is larger than the sum of its proper divisors (49664739615).

84207761121 is a wasteful number, since it uses less digits than its factorization.

84207761121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842093.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 84207761121 in words is "eighty-four billion, two hundred seven million, seven hundred sixty-one thousand, one hundred twenty-one".