1102020121 has 16 divisors (see below), whose sum is σ = 1230854400. Its totient is φ = 980529408.

The previous prime is 1102020109. The next prime is 1102020131. The reversal of 1102020121 is 1210202011.

It is a cyclic number.

It is not a de Polignac number, because 1102020121 - 2¹⁷ = 1101889049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102020098 and 1102020107.

It is not an unprimeable number, because it can be changed into a prime (1102020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161056 + ... + 167758.

It is an arithmetic number, because the mean of its divisors is an integer number (76928400).

Almost surely, 2^1102020121 is an apocalyptic number.

It is an amenable number.

1102020121 is a deficient number, since it is larger than the sum of its proper divisors (128834279).

1102020121 is a wasteful number, since it uses less digits than its factorization.

1102020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1102020121 is about 33196.6884041165. The cubic root of 1102020121 is about 1032.9116474225.

Adding to 1102020121 its reverse (1210202011), we get a palindrome (2312222132).

The spelling of 1102020121 in words is "one billion, one hundred two million, twenty thousand, one hundred twenty-one".