87222201 has 8 divisors (see below), whose sum is σ = 126868704. Its totient is φ = 52861920.

The previous prime is 87222197. The next prime is 87222229. The reversal of 87222201 is 10222278.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87222201 - 2² = 87222197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87222701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321516 + ... + 1321581.

It is an arithmetic number, because the mean of its divisors is an integer number (15858588).

Almost surely, 2^87222201 is an apocalyptic number.

It is an amenable number.

87222201 is a deficient number, since it is larger than the sum of its proper divisors (39646503).

87222201 is a wasteful number, since it uses less digits than its factorization.

87222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643111.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 87222201 is about 9339.2826812341. The cubic root of 87222201 is about 443.4816764146.

Adding to 87222201 its reverse (10222278), we get a palindrome (97444479).

The spelling of 87222201 in words is "eighty-seven million, two hundred twenty-two thousand, two hundred one".