1021201010111 has 8 divisors (see below), whose sum is σ = 1046217410784. Its totient is φ = 996397515360.

The previous prime is 1021201010087. The next prime is 1021201010113. The reversal of 1021201010111 is 1110101021201.

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

It is not a de Polignac number, because 1021201010111 - 2¹⁴ = 1021200993727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021201010092 and 1021201010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201010113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53216771 + ... + 53235956.

It is an arithmetic number, because the mean of its divisors is an integer number (130777176348).

Almost surely, 2^{1021201010111} is an apocalyptic number.

1021201010111 is a deficient number, since it is larger than the sum of its proper divisors (25016400673).

1021201010111 is a wasteful number, since it uses less digits than its factorization.

1021201010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106452961.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1021201010111 its reverse (1110101021201), we get a palindrome (2131302031312).

The spelling of 1021201010111 in words is "one trillion, twenty-one billion, two hundred one million, ten thousand, one hundred eleven".