1020121220201 has 16 divisors (see below), whose sum is σ = 1054375964928. Its totient is φ = 986348832000.

The previous prime is 1020121220179. The next prime is 1020121220303. The reversal of 1020121220201 is 1020221210201.

It is a cyclic number.

It is not a de Polignac number, because 1020121220201 - 2⁶ = 1020121220137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020121220101) 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, 27285761 + ... + 27323121.

It is an arithmetic number, because the mean of its divisors is an integer number (65898497808).

Almost surely, 2^{1020121220201} is an apocalyptic number.

It is an amenable number.

1020121220201 is a deficient number, since it is larger than the sum of its proper divisors (34254744727).

1020121220201 is a wasteful number, since it uses less digits than its factorization.

1020121220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43792.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020121220201 its reverse (1020221210201), we get a palindrome (2040342430402).

The spelling of 1020121220201 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".