1220102112111 has 8 divisors (see below), whose sum is σ = 1639221158784. Its totient is φ = 807192236760.

The previous prime is 1220102112049. The next prime is 1220102112139. The reversal of 1220102112111 is 1112112010221.

It is a happy number.

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

It is not a de Polignac number, because 1220102112111 - 2²² = 1220097917807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220102112191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552292371 + ... + 1552293156.

It is an arithmetic number, because the mean of its divisors is an integer number (204902644848).

Almost surely, 2^{1220102112111} is an apocalyptic number.

1220102112111 is a deficient number, since it is larger than the sum of its proper divisors (419119046673).

1220102112111 is a wasteful number, since it uses less digits than its factorization.

1220102112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104585661.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1220102112111 its reverse (1112112010221), we get a palindrome (2332214122332).

The spelling of 1220102112111 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred twelve thousand, one hundred eleven".