221001010102 has 16 divisors (see below), whose sum is σ = 342521424000. Its totient is φ = 106834000320.

The previous prime is 221001010091. The next prime is 221001010117. The reversal of 221001010102 is 201010100122.

It is a super-2 number, since 2×221001010102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633977 + ... + 1764052.

It is an arithmetic number, because the mean of its divisors is an integer number (21407589000).

Almost surely, 2^221001010102 is an apocalyptic number.

221001010102 is a deficient number, since it is larger than the sum of its proper divisors (121520413898).

221001010102 is a wasteful number, since it uses less digits than its factorization.

221001010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399111.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221001010102 its reverse (201010100122), we get a palindrome (422011110224).

The spelling of 221001010102 in words is "two hundred twenty-one billion, one million, ten thousand, one hundred two".