121220025011 has 2 divisors, whose sum is σ = 121220025012. Its totient is φ = 121220025010.

The previous prime is 121220024957. The next prime is 121220025077. The reversal of 121220025011 is 110520022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220025011 - 2²⁶ = 121152916147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121220025611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610012505 + 60610012506.

It is an arithmetic number, because the mean of its divisors is an integer number (60610012506).

Almost surely, 2^121220025011 is an apocalyptic number.

121220025011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220025011 is an equidigital number, since it uses as much as digits as its factorization.

121220025011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 121220025011 its reverse (110520022121), we get a palindrome (231740047132).

The spelling of 121220025011 in words is "one hundred twenty-one billion, two hundred twenty million, twenty-five thousand, eleven".