102221210122111 has 4 divisors (see below), whose sum is σ = 102228983020224. Its totient is φ = 102213437224000.

The previous prime is 102221210122067. The next prime is 102221210122117. The reversal of 102221210122111 is 111221012122201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102221210122111 - 2⁹ = 102221210121599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221210122117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3886429330 + ... + 3886455631.

It is an arithmetic number, because the mean of its divisors is an integer number (25557245755056).

Almost surely, 2^{102221210122111} is an apocalyptic number.

102221210122111 is a deficient number, since it is larger than the sum of its proper divisors (7772898113).

102221210122111 is an equidigital number, since it uses as much as digits as its factorization.

102221210122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772898112.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102221210122111 its reverse (111221012122201), we get a palindrome (213442222244312).

The spelling of 102221210122111 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred eleven".