211000020121 has 8 divisors (see below), whose sum is σ = 230185296288. Its totient is φ = 191815320000.

The previous prime is 211000020107. The next prime is 211000020131. The reversal of 211000020121 is 121020000112.

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 211000020121 - 2⁹ = 211000019609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211000020098 and 211000020107.

It is not an unprimeable number, because it can be changed into a prime (211000020131) 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, 1058446 + ... + 1241896.

It is an arithmetic number, because the mean of its divisors is an integer number (28773162036).

Almost surely, 2^211000020121 is an apocalyptic number.

It is an amenable number.

211000020121 is a deficient number, since it is larger than the sum of its proper divisors (19185276167).

211000020121 is a wasteful number, since it uses less digits than its factorization.

211000020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288023.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211000020121 its reverse (121020000112), we get a palindrome (332020020233).

The spelling of 211000020121 in words is "two hundred eleven billion, twenty thousand, one hundred twenty-one".