211012202121 has 8 divisors (see below), whose sum is σ = 321542403264. Its totient is φ = 120578401200.

The previous prime is 211012202117. The next prime is 211012202129. The reversal of 211012202121 is 121202210112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211012202121 - 2² = 211012202117 is a prime.

It is a super-2 number, since 2×211012202121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211012202121.

It is not an unprimeable number, because it can be changed into a prime (211012202129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5024100030 + ... + 5024100071.

It is an arithmetic number, because the mean of its divisors is an integer number (40192800408).

Almost surely, 2^211012202121 is an apocalyptic number.

211012202121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211012202121 is a deficient number, since it is larger than the sum of its proper divisors (110530201143).

211012202121 is a wasteful number, since it uses less digits than its factorization.

211012202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10048200111.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211012202121 its reverse (121202210112), we get a palindrome (332214412233).

It can be divided in two parts, 21101 and 2202121, that added together give a palindrome (2223222).

The spelling of 211012202121 in words is "two hundred eleven billion, twelve million, two hundred two thousand, one hundred twenty-one".