1021200102111 has 16 divisors (see below), whose sum is σ = 1556491083264. Its totient is φ = 583401674784.

The previous prime is 1021200102107. The next prime is 1021200102119. The reversal of 1021200102111 is 1112010021201.

It is not a de Polignac number, because 1021200102111 - 2² = 1021200102107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021200102119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5796171 + ... + 5969756.

It is an arithmetic number, because the mean of its divisors is an integer number (97280692704).

Almost surely, 2^{1021200102111} is an apocalyptic number.

1021200102111 is a deficient number, since it is larger than the sum of its proper divisors (535290981153).

1021200102111 is a wasteful number, since it uses less digits than its factorization.

1021200102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11770070.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021200102111 its reverse (1112010021201), we get a palindrome (2133210123312).

The spelling of 1021200102111 in words is "one trillion, twenty-one billion, two hundred million, one hundred two thousand, one hundred eleven".