121230220221201 has 64 divisors (see below), whose sum is σ = 209440137697280. Its totient is φ = 60572064591360.

The previous prime is 121230220221167. The next prime is 121230220221203. The reversal of 121230220221201 is 102122022032121.

It is not a de Polignac number, because 121230220221201 - 2¹⁴ = 121230220204817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121230220221203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37899741 + ... + 40973781.

It is an arithmetic number, because the mean of its divisors is an integer number (3272502151520).

Almost surely, 2^{121230220221201} is an apocalyptic number.

It is an amenable number.

121230220221201 is a deficient number, since it is larger than the sum of its proper divisors (88209917476079).

121230220221201 is a wasteful number, since it uses less digits than its factorization.

121230220221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081686.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121230220221201 its reverse (102122022032121), we get a palindrome (223352242253322).

The spelling of 121230220221201 in words is "one hundred twenty-one trillion, two hundred thirty billion, two hundred twenty million, two hundred twenty-one thousand, two hundred one".