121020021220211 has 8 divisors (see below), whose sum is σ = 121506523829760. Its totient is φ = 120533933188872.

The previous prime is 121020021220207. The next prime is 121020021220297. The reversal of 121020021220211 is 112022120020121.

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 121020021220211 - 2² = 121020021220207 is a prime.

It is a super-2 number, since 2×121020021220211² (a number of 29 digits) contains 22 as substring.

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 121020021220211.

It is not an unprimeable number, because it can be changed into a prime (121020021225211) 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, 103059551 + ... + 104227208.

It is an arithmetic number, because the mean of its divisors is an integer number (15188315478720).

Almost surely, 2^{121020021220211} is an apocalyptic number.

121020021220211 is a deficient number, since it is larger than the sum of its proper divisors (486502609549).

121020021220211 is a wasteful number, since it uses less digits than its factorization.

121020021220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207289105.

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

Adding to 121020021220211 its reverse (112022120020121), we get a palindrome (233042141240332).

The spelling of 121020021220211 in words is "one hundred twenty-one trillion, twenty billion, twenty-one million, two hundred twenty thousand, two hundred eleven".