87102021201 has 32 divisors (see below), whose sum is σ = 127469260800. Its totient is φ = 52580404800.

The previous prime is 87102021191. The next prime is 87102021221. The reversal of 87102021201 is 10212020178.

It is not a de Polignac number, because 87102021201 - 2²¹ = 87099924049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87102021221) 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, 471996 + ... + 630066.

It is an arithmetic number, because the mean of its divisors is an integer number (3983414400).

Almost surely, 2^87102021201 is an apocalyptic number.

It is an amenable number.

87102021201 is a deficient number, since it is larger than the sum of its proper divisors (40367239599).

87102021201 is a wasteful number, since it uses less digits than its factorization.

87102021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158357.

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 87102021201 its reverse (10212020178), we get a palindrome (97314041379).

The spelling of 87102021201 in words is "eighty-seven billion, one hundred two million, twenty-one thousand, two hundred one".