121211001012212 has 6 divisors (see below), whose sum is σ = 212119251771378. Its totient is φ = 60605500506104.

The previous prime is 121211001012119. The next prime is 121211001012217. The reversal of 121211001012212 is 212210100112121.

It can be written as a sum of positive squares in only one way, i.e., 103102010135056 + 18108990877156 = 10153916^2 + 4255466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211001012217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151375126523 + ... + 15151375126530.

It is an arithmetic number, because the mean of its divisors is an integer number (35353208628563).

Almost surely, 2^{121211001012212} is an apocalyptic number.

It is an amenable number.

121211001012212 is a deficient number, since it is larger than the sum of its proper divisors (90908250759166).

121211001012212 is a wasteful number, since it uses less digits than its factorization.

121211001012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302750253057 (or 30302750253055 counting only the distinct ones).

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

Adding to 121211001012212 its reverse (212210100112121), we get a palindrome (333421101124333).

Subtracting 121211001012212 from its reverse (212210100112121), we obtain a palindrome (90999099099909).

The spelling of 121211001012212 in words is "one hundred twenty-one trillion, two hundred eleven billion, one million, twelve thousand, two hundred twelve".