121221201012010 has 64 divisors (see below), whose sum is σ = 240400246809600. Its totient is φ = 43642342336000.

The previous prime is 121221201011993. The next prime is 121221201012047. The reversal of 121221201012010 is 10210102122121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314431446 + ... + 314816734.

It is an arithmetic number, because the mean of its divisors is an integer number (3756253856400).

Almost surely, 2^{121221201012010} is an apocalyptic number.

121221201012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221201012010 is a deficient number, since it is larger than the sum of its proper divisors (119179045797590).

121221201012010 is a wasteful number, since it uses less digits than its factorization.

121221201012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413727.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121221201012010 its reverse (10210102122121), we get a palindrome (131431303134131).

The spelling of 121221201012010 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred one million, twelve thousand, ten".