211001202012121 has 8 divisors (see below), whose sum is σ = 211047306148224. Its totient is φ = 210955102132320.

The previous prime is 211001202012049. The next prime is 211001202012127. The reversal of 211001202012121 is 121210202100112.

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 211001202012121 - 2⁹ = 211001202011609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211001202012095 and 211001202012104.

It is not an unprimeable number, because it can be changed into a prime (211001202012127) 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, 99122556 + ... + 101228866.

It is an arithmetic number, because the mean of its divisors is an integer number (26380913268528).

Almost surely, 2^{211001202012121} is an apocalyptic number.

It is an amenable number.

211001202012121 is a deficient number, since it is larger than the sum of its proper divisors (46104136103).

211001202012121 is a wasteful number, since it uses less digits than its factorization.

211001202012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128151.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211001202012121 its reverse (121210202100112), we get a palindrome (332211404112233).

The spelling of 211001202012121 in words is "two hundred eleven trillion, one billion, two hundred two million, twelve thousand, one hundred twenty-one".