221111002102 has 16 divisors (see below), whose sum is σ = 332624548800. Its totient is φ = 110236298760.

The previous prime is 221111002081. The next prime is 221111002121. The reversal of 221111002102 is 201200111122.

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, 3194077 + ... + 3262567.

It is an arithmetic number, because the mean of its divisors is an integer number (20789034300).

Almost surely, 2^221111002102 is an apocalyptic number.

221111002102 is a deficient number, since it is larger than the sum of its proper divisors (111513546698).

221111002102 is a wasteful number, since it uses less digits than its factorization.

221111002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73131.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221111002102 its reverse (201200111122), we get a palindrome (422311113224).

The spelling of 221111002102 in words is "two hundred twenty-one billion, one hundred eleven million, two thousand, one hundred two".