102001010212111 has 4 divisors (see below), whose sum is σ = 102002230447272. Its totient is φ = 101999789976952.

The previous prime is 102001010212109. The next prime is 102001010212117. The reversal of 102001010212111 is 111212010100201.

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 102001010212111 - 2¹ = 102001010212109 is a prime.

It is a super-2 number, since 2×102001010212111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001010212091 and 102001010212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001010212117) 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, 609992185 + ... + 610159378.

It is an arithmetic number, because the mean of its divisors is an integer number (25500557611818).

Almost surely, 2^{102001010212111} is an apocalyptic number.

102001010212111 is a deficient number, since it is larger than the sum of its proper divisors (1220235161).

102001010212111 is an equidigital number, since it uses as much as digits as its factorization.

102001010212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220235160.

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

Adding to 102001010212111 its reverse (111212010100201), we get a palindrome (213213020312312).

The spelling of 102001010212111 in words is "one hundred two trillion, one billion, ten million, two hundred twelve thousand, one hundred eleven".