211121210002021 has 32 divisors (see below), whose sum is σ = 235219169082240. Its totient is φ = 187883866368000.

The previous prime is 211121210002019. The next prime is 211121210002069. The reversal of 211121210002021 is 120200012121112.

It is not a de Polignac number, because 211121210002021 - 2¹ = 211121210002019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211121210001986 and 211121210002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121210002921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2833538250 + ... + 2833612756.

It is an arithmetic number, because the mean of its divisors is an integer number (7350599033820).

Almost surely, 2^{211121210002021} is an apocalyptic number.

It is an amenable number.

211121210002021 is a deficient number, since it is larger than the sum of its proper divisors (24097959080219).

211121210002021 is a wasteful number, since it uses less digits than its factorization.

211121210002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103365.

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

Adding to 211121210002021 its reverse (120200012121112), we get a palindrome (331321222123133).

The spelling of 211121210002021 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred ten million, two thousand, twenty-one".