221011111112102 has 8 divisors (see below), whose sum is σ = 331543460261136. Its totient is φ = 110496624358392.

The previous prime is 221011111112083. The next prime is 221011111112123. The reversal of 221011111112102 is 201211111110122.

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

It is a super-2 number, since 2×221011111112102² (a number of 29 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 3 ways as a sum of consecutive naturals, for example, 4465567898 + ... + 4465617389.

It is an arithmetic number, because the mean of its divisors is an integer number (41442932532642).

Almost surely, 2^{221011111112102} is an apocalyptic number.

221011111112102 is a deficient number, since it is larger than the sum of its proper divisors (110532349149034).

221011111112102 is a wasteful number, since it uses less digits than its factorization.

221011111112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8931197662.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221011111112102 its reverse (201211111110122), we get a palindrome (422222222222224).

The spelling of 221011111112102 in words is "two hundred twenty-one trillion, eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred two".