1201000001212 has 48 divisors (see below), whose sum is σ = 2296968928128. Its totient is φ = 544921382720.

The previous prime is 1201000001209. The next prime is 1201000001231. The reversal of 1201000001212 is 2121000001021.

It is a super-2 number, since 2×1201000001212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135441603 + ... + 135450469.

It is an arithmetic number, because the mean of its divisors is an integer number (47853519336).

Almost surely, 2^{1201000001212} is an apocalyptic number.

It is an amenable number.

1201000001212 is a deficient number, since it is larger than the sum of its proper divisors (1095968926916).

1201000001212 is a wasteful number, since it uses less digits than its factorization.

1201000001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14106 (or 14104 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1201000001212 its reverse (2121000001021), we get a palindrome (3322000002233).

The spelling of 1201000001212 in words is "one trillion, two hundred one billion, one thousand, two hundred twelve".