1101210121 has 8 divisors (see below), whose sum is σ = 1204178688. Its totient is φ = 998718000.

The previous prime is 1101210109. The next prime is 1101210137. The reversal of 1101210121 is 1210121011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101210121 - 2²⁵ = 1067655689 is a prime.

It is a Duffinian number.

1101210121 is a modest number, since divided by 1210121 gives 11 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1101210098 and 1101210107.

It is not an unprimeable number, because it can be changed into a prime (1101210181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114265 + ... + 123526.

It is an arithmetic number, because the mean of its divisors is an integer number (150522336).

Almost surely, 2^1101210121 is an apocalyptic number.

1101210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101210121 is a deficient number, since it is larger than the sum of its proper divisors (102968567).

1101210121 is a wasteful number, since it uses less digits than its factorization.

1101210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238223.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1101210121 is about 33184.4861494042. The cubic root of 1101210121 is about 1032.6585172883.

Adding to 1101210121 its reverse (1210121011), we get a palindrome (2311331132).

The spelling of 1101210121 in words is "one billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".