121000101000001 has 8 divisors (see below), whose sum is σ = 122660007048680. Its totient is φ = 119340259016832.

The previous prime is 121000100999957. The next prime is 121000101000007. The reversal of 121000101000001 is 100000101000121.

It can be written as a sum of positive squares in 4 ways, for example, as 17678361600 + 120982422638401 = 132960^2 + 10999201^2 .

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 121000101000001 - 2²¹ = 121000098902849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000101000007) 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, 12206910 + ... + 19773943.

It is an arithmetic number, because the mean of its divisors is an integer number (15332500881085).

Almost surely, 2^{121000101000001} is an apocalyptic number.

It is an amenable number.

121000101000001 is a deficient number, since it is larger than the sum of its proper divisors (1659906048679).

121000101000001 is an equidigital number, since it uses as much as digits as its factorization.

121000101000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32032755.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 121000101000001 its reverse (100000101000121), we get a palindrome (221000202000122).

The spelling of 121000101000001 in words is "one hundred twenty-one trillion, one hundred one million, one", and thus it is an aban number.