121012202021211 has 20 divisors (see below), whose sum is σ = 181922723793712. Its totient is φ = 80160949101168.

The previous prime is 121012202021197. The next prime is 121012202021251. The reversal of 121012202021211 is 112120202210121.

121012202021211 is a `hidden beast` number, since 1 + 210 + 1 + 220 + 2 + 0 + 21 + 211 = 666.

It is not a de Polignac number, because 121012202021211 - 2⁷ = 121012202021083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012202021251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4757878375 + ... + 4757903808.

Almost surely, 2^{121012202021211} is an apocalyptic number.

121012202021211 is a deficient number, since it is larger than the sum of its proper divisors (60910521772501).

121012202021211 is an equidigital number, since it uses as much as digits as its factorization.

121012202021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515782352 (or 9515782343 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121012202021211 its reverse (112120202210121), we get a palindrome (233132404231332).

The spelling of 121012202021211 in words is "one hundred twenty-one trillion, twelve billion, two hundred two million, twenty-one thousand, two hundred eleven".