211121202121010 has 8 divisors (see below), whose sum is σ = 380018163817836. Its totient is φ = 84448480848400.

The previous prime is 211121202120989. The next prime is 211121202121031. The reversal of 211121202121010 is 10121202121112.

It is an interprime number because it is at equal distance from previous prime (211121202120989) and next prime (211121202121031).

It can be written as a sum of positive squares in 2 ways, for example, as 200980155502009 + 10141046619001 = 14176747^2 + 3184501^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 211121202121010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10556060106041 + ... + 10556060106060.

Almost surely, 2^{211121202121010} is an apocalyptic number.

211121202121010 is a deficient number, since it is larger than the sum of its proper divisors (168896961696826).

211121202121010 is a wasteful number, since it uses less digits than its factorization.

211121202121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21112120212108.

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

Adding to 211121202121010 its reverse (10121202121112), we get a palindrome (221242404242122).

The spelling of 211121202121010 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, ten".