121020020001211 has 4 divisors (see below), whose sum is σ = 121020043523400. Its totient is φ = 121019996479024.

The previous prime is 121020020001163. The next prime is 121020020001229. The reversal of 121020020001211 is 112100020020121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121020020001211 - 2²¹ = 121020017904059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121020020001191 and 121020020001200.

It is not an unprimeable number, because it can be changed into a prime (121020020001011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359041 + ... + 15561778.

It is an arithmetic number, because the mean of its divisors is an integer number (30255010880850).

Almost surely, 2^{121020020001211} is an apocalyptic number.

121020020001211 is a deficient number, since it is larger than the sum of its proper divisors (23522189).

121020020001211 is an equidigital number, since it uses as much as digits as its factorization.

121020020001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23522188.

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

Adding to 121020020001211 its reverse (112100020020121), we get a palindrome (233120040021332).

The spelling of 121020020001211 in words is "one hundred twenty-one trillion, twenty billion, twenty million, one thousand, two hundred eleven".