1201210001212 has 96 divisors (see below), whose sum is σ = 2416693914432. Its totient is φ = 517514489856.

The previous prime is 1201210001197. The next prime is 1201210001219. The reversal of 1201210001212 is 2121000121021.

It is a super-3 number, since 3×1201210001212³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1201210001192 and 1201210001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201210001219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78129958 + ... + 78145330.

It is an arithmetic number, because the mean of its divisors is an integer number (25173894942).

Almost surely, 2^{1201210001212} is an apocalyptic number.

It is an amenable number.

1201210001212 is an abundant number, since it is smaller than the sum of its proper divisors (1215483913220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201210001212 is a wasteful number, since it uses less digits than its factorization.

1201210001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16127 (or 16125 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201210001212 its reverse (2121000121021), we get a palindrome (3322210122233).

The spelling of 1201210001212 in words is "one trillion, two hundred one billion, two hundred ten million, one thousand, two hundred twelve".