1020111032121 has 16 divisors (see below), whose sum is σ = 1398463842048. Its totient is φ = 661038537600.

The previous prime is 1020111032111. The next prime is 1020111032147. The reversal of 1020111032121 is 1212301110201.

It is not a de Polignac number, because 1020111032121 - 2¹⁹ = 1020110507833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020111032121.

It is not an unprimeable number, because it can be changed into a prime (1020111032111) 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, 15268486 + ... + 15335151.

It is an arithmetic number, because the mean of its divisors is an integer number (87403990128).

Almost surely, 2^{1020111032121} is an apocalyptic number.

It is an amenable number.

1020111032121 is a deficient number, since it is larger than the sum of its proper divisors (378352809927).

1020111032121 is a wasteful number, since it uses less digits than its factorization.

1020111032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30603952.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1020111032121 its reverse (1212301110201), we get a palindrome (2232412142322).

The spelling of 1020111032121 in words is "one trillion, twenty billion, one hundred eleven million, thirty-two thousand, one hundred twenty-one".