1021011120101 has 16 divisors (see below), whose sum is σ = 1237436818560. Its totient is φ = 822387793920.

The previous prime is 1021011120083. The next prime is 1021011120109. The reversal of 1021011120101 is 1010211101201.

It is not a de Polignac number, because 1021011120101 - 2⁶ = 1021011120037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021011120109) 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, 6616331 + ... + 6768888.

It is an arithmetic number, because the mean of its divisors is an integer number (77339801160).

Almost surely, 2^{1021011120101} is an apocalyptic number.

It is an amenable number.

1021011120101 is a deficient number, since it is larger than the sum of its proper divisors (216425698459).

1021011120101 is a wasteful number, since it uses less digits than its factorization.

1021011120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13385884.

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

Adding to 1021011120101 its reverse (1010211101201), we get a palindrome (2031222221302).

The spelling of 1021011120101 in words is "one trillion, twenty-one billion, eleven million, one hundred twenty thousand, one hundred one".