221012130002 has 4 divisors (see below), whose sum is σ = 331518195006. Its totient is φ = 110506065000.

The previous prime is 221012129981. The next prime is 221012130013. The reversal of 221012130002 is 200031210122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200031210122 = 2 ⋅100015605061.

It can be written as a sum of positive squares in only one way, i.e., 208976065321 + 12036064681 = 457139^2 + 109709^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55253032499 + ... + 55253032502.

Almost surely, 2^221012130002 is an apocalyptic number.

221012130002 is a deficient number, since it is larger than the sum of its proper divisors (110506065004).

221012130002 is a wasteful number, since it uses less digits than its factorization.

221012130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110506065003.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221012130002 its reverse (200031210122), we get a palindrome (421043340124).

The spelling of 221012130002 in words is "two hundred twenty-one billion, twelve million, one hundred thirty thousand, two".