121021201201 has 16 divisors (see below), whose sum is σ = 126427588560. Its totient is φ = 115702594560.

The previous prime is 121021201183. The next prime is 121021201207. The reversal of 121021201201 is 102102120121.

It can be written as a sum of positive squares in 8 ways, for example, as 25339864225 + 95681336976 = 159185^2 + 309324^2 .

It is not a de Polignac number, because 121021201201 - 2⁹ = 121021200689 is a prime.

It is a super-2 number, since 2×121021201201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021201207) 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, 1173541 + ... + 1272493.

It is an arithmetic number, because the mean of its divisors is an integer number (7901724285).

Almost surely, 2^121021201201 is an apocalyptic number.

It is an amenable number.

121021201201 is a deficient number, since it is larger than the sum of its proper divisors (5406387359).

121021201201 is a wasteful number, since it uses less digits than its factorization.

121021201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99396.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121021201201 its reverse (102102120121), we get a palindrome (223123321322).

It can be divided in two parts, 12102120120 and 1, that added together give a palindrome (12102120121).

The spelling of 121021201201 in words is "one hundred twenty-one billion, twenty-one million, two hundred one thousand, two hundred one".