121011220201 has 2 divisors, whose sum is σ = 121011220202. Its totient is φ = 121011220200.

The previous prime is 121011220151. The next prime is 121011220217. The reversal of 121011220201 is 102022110121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106390782976 + 14620437225 = 326176^2 + 120915^2 .

It is a cyclic number.

It is not a de Polignac number, because 121011220201 - 2¹³ = 121011212009 is a prime.

It is not a weakly prime, because it can be changed into another prime (121011220261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505610100 + 60505610101.

It is an arithmetic number, because the mean of its divisors is an integer number (60505610101).

Almost surely, 2^121011220201 is an apocalyptic number.

It is an amenable number.

121011220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011220201 is an equidigital number, since it uses as much as digits as its factorization.

121011220201 is an evil number, because the sum of its binary digits is even.

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

Adding to 121011220201 its reverse (102022110121), we get a palindrome (223033330322).

The spelling of 121011220201 in words is "one hundred twenty-one billion, eleven million, two hundred twenty thousand, two hundred one".