121020012221201 has 8 divisors (see below), whose sum is σ = 121245692409000. Its totient is φ = 120794339352960.

The previous prime is 121020012221153. The next prime is 121020012221233. The reversal of 121020012221201 is 102122210020121.

It can be written as a sum of positive squares in 4 ways, for example, as 1271310370576 + 119748701850625 = 1127524^2 + 10942975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121020012221201 - 2⁴² = 116621965710097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121020012221201.

It is not an unprimeable number, because it can be changed into a prime (121020012229201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31845725 + ... + 35442773.

It is an arithmetic number, because the mean of its divisors is an integer number (15155711551125).

Almost surely, 2^{121020012221201} is an apocalyptic number.

It is an amenable number.

121020012221201 is a deficient number, since it is larger than the sum of its proper divisors (225680187799).

121020012221201 is an equidigital number, since it uses as much as digits as its factorization.

121020012221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659779.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121020012221201 its reverse (102122210020121), we get a palindrome (223142222241322).

The spelling of 121020012221201 in words is "one hundred twenty-one trillion, twenty billion, twelve million, two hundred twenty-one thousand, two hundred one".