211121201201021 has 8 divisors (see below), whose sum is σ = 211199187189504. Its totient is φ = 211043226698640.

The previous prime is 211121201201003. The next prime is 211121201201107. The reversal of 211121201201021 is 120102102121112.

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 211121201201021 - 2⁴⁶ = 140752457023357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121201201621) 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, 33983720 + ... + 39713166.

It is an arithmetic number, because the mean of its divisors is an integer number (26399898398688).

Almost surely, 2^{211121201201021} is an apocalyptic number.

It is an amenable number.

211121201201021 is a deficient number, since it is larger than the sum of its proper divisors (77985988483).

211121201201021 is an equidigital number, since it uses as much as digits as its factorization.

211121201201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743051.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211121201201021 its reverse (120102102121112), we get a palindrome (331223303322133).

The spelling of 211121201201021 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred one million, two hundred one thousand, twenty-one".