1020121021101 has 48 divisors (see below), whose sum is σ = 1704087504000. Its totient is φ = 538038732672.

The previous prime is 1020121021097. The next prime is 1020121021109. The reversal of 1020121021101 is 1011201210201.

It is not a de Polignac number, because 1020121021101 - 2² = 1020121021097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121021109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38109160 + ... + 38135918.

It is an arithmetic number, because the mean of its divisors is an integer number (35501823000).

Almost surely, 2^{1020121021101} is an apocalyptic number.

It is an amenable number.

1020121021101 is a deficient number, since it is larger than the sum of its proper divisors (683966482899).

1020121021101 is a wasteful number, since it uses less digits than its factorization.

1020121021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46738 (or 46731 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020121021101 its reverse (1011201210201), we get a palindrome (2031322231302).

The spelling of 1020121021101 in words is "one trillion, twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred one".