121210010202111 has 16 divisors (see below), whose sum is σ = 163717142131200. Its totient is φ = 79755501578688.

The previous prime is 121210010202103. The next prime is 121210010202121. The reversal of 121210010202111 is 111202010012121.

It is a happy number.

It is not a de Polignac number, because 121210010202111 - 2³ = 121210010202103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210010202121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90043966 + ... + 91380171.

It is an arithmetic number, because the mean of its divisors is an integer number (10232321383200).

Almost surely, 2^{121210010202111} is an apocalyptic number.

121210010202111 is a deficient number, since it is larger than the sum of its proper divisors (42507131929089).

121210010202111 is a wasteful number, since it uses less digits than its factorization.

121210010202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181427038.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121210010202111 its reverse (111202010012121), we get a palindrome (232412020214232).

The spelling of 121210010202111 in words is "one hundred twenty-one trillion, two hundred ten billion, ten million, two hundred two thousand, one hundred eleven".