221002131010 has 8 divisors (see below), whose sum is σ = 397803835836. Its totient is φ = 88400852400.

The previous prime is 221002130983. The next prime is 221002131019. The reversal of 221002131010 is 10131200122.

It can be written as a sum of positive squares in 2 ways, for example, as 215001924489 + 6000206521 = 463683^2 + 77461^2 .

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

It is a super-2 number, since 2×221002131010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221002131019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11050106541 + ... + 11050106560.

Almost surely, 2^221002131010 is an apocalyptic number.

221002131010 is a deficient number, since it is larger than the sum of its proper divisors (176801704826).

221002131010 is a wasteful number, since it uses less digits than its factorization.

221002131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22100213108.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 221002131010 its reverse (10131200122), we get a palindrome (231133331132).

The spelling of 221002131010 in words is "two hundred twenty-one billion, two million, one hundred thirty-one thousand, ten".