121012221212201 has 4 divisors (see below), whose sum is σ = 132013332231504. Its totient is φ = 110011110192900.

The previous prime is 121012221212167. The next prime is 121012221212209. The reversal of 121012221212201 is 102212122210121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121012221212201 - 2¹⁰ = 121012221211177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012221212209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500555509635 + ... + 5500555509656.

It is an arithmetic number, because the mean of its divisors is an integer number (33003333057876).

Almost surely, 2^{121012221212201} is an apocalyptic number.

121012221212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121012221212201 is a deficient number, since it is larger than the sum of its proper divisors (11001111019303).

121012221212201 is a wasteful number, since it uses less digits than its factorization.

121012221212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001111019302.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121012221212201 its reverse (102212122210121), we get a palindrome (223224343422322).

The spelling of 121012221212201 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred one".