1020121201101 has 32 divisors (see below), whose sum is σ = 1403526631680. Its totient is φ = 658578663936.

The previous prime is 1020121201097. The next prime is 1020121201153. The reversal of 1020121201101 is 1011021210201.

It is not a de Polignac number, because 1020121201101 - 2² = 1020121201097 is a prime.

It is a super-2 number, since 2×1020121201101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121201171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22743585 + ... + 22788393.

It is an arithmetic number, because the mean of its divisors is an integer number (43860207240).

Almost surely, 2^{1020121201101} is an apocalyptic number.

It is an amenable number.

1020121201101 is a deficient number, since it is larger than the sum of its proper divisors (383405430579).

1020121201101 is a wasteful number, since it uses less digits than its factorization.

1020121201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45813.

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

Adding to 1020121201101 its reverse (1011021210201), we get a palindrome (2031142411302).

It can be divided in two parts, 1020 and 121201101, that added together give a palindrome (121202121).

The spelling of 1020121201101 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred one thousand, one hundred one".