121121001121010 has 32 divisors (see below), whose sum is σ = 237842205999552. Its totient is φ = 44043147852480.

The previous prime is 121121001120997. The next prime is 121121001121013. The reversal of 121121001121010 is 10121100121121.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121121001121013) 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, 4934477 + ... + 16327616.

It is an arithmetic number, because the mean of its divisors is an integer number (7432568937486).

Almost surely, 2^{121121001121010} is an apocalyptic number.

121121001121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121001121010 is a deficient number, since it is larger than the sum of its proper divisors (116721204878542).

121121001121010 is a wasteful number, since it uses less digits than its factorization.

121121001121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313898.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121121001121010 its reverse (10121100121121), we get a palindrome (131242101242131).

The spelling of 121121001121010 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one million, one hundred twenty-one thousand, ten".