102111020001211 has 16 divisors (see below), whose sum is σ = 111477773240064. Its totient is φ = 92960406825984.

The previous prime is 102111020001203. The next prime is 102111020001251. The reversal of 102111020001211 is 112100020111201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102111020001211 - 2³ = 102111020001203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111020001191 and 102111020001200.

It is not an unprimeable number, because it can be changed into a prime (102111020001251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15961110 + ... + 21423796.

It is an arithmetic number, because the mean of its divisors is an integer number (6967360827504).

Almost surely, 2^{102111020001211} is an apocalyptic number.

102111020001211 is a deficient number, since it is larger than the sum of its proper divisors (9366753238853).

102111020001211 is a wasteful number, since it uses less digits than its factorization.

102111020001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482470.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111020001211 its reverse (112100020111201), we get a palindrome (214211040112412).

The spelling of 102111020001211 in words is "one hundred two trillion, one hundred eleven billion, twenty million, one thousand, two hundred eleven".