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1201220402212 = 22378116354069
BaseRepresentation
bin10001011110101110010…
…100001011110000100100
311020211120010002222002101
4101132232110023300210
5124140044410332322
62315455534021444
7152533234643665
oct21365624136044
94224503088071
101201220402212
11423486668366
1217497a347884
13893753a36ac
14421d464936c
15213a6e06327
hex117ae50bc24

1201220402212 has 12 divisors (see below), whose sum is σ = 2158950182620. Its totient is φ = 584377492896.

The previous prime is 1201220402197. The next prime is 1201220402233. The reversal of 1201220402212 is 2122040221021.

It can be written as a sum of positive squares in 2 ways, for example, as 662898842596 + 538321559616 = 814186^2 + 733704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1201220402212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4058176887 + ... + 4058177182.

Almost surely, 21201220402212 is an apocalyptic number.

It is an amenable number.

1201220402212 is a deficient number, since it is larger than the sum of its proper divisors (957729780408).

1201220402212 is a wasteful number, since it uses less digits than its factorization.

1201220402212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8116354110 (or 8116354108 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1201220402212 its reverse (2122040221021), we get a palindrome (3323260623233).

The spelling of 1201220402212 in words is "one trillion, two hundred one billion, two hundred twenty million, four hundred two thousand, two hundred twelve".

Divisors: 1 2 4 37 74 148 8116354069 16232708138 32465416276 300305100553 600610201106 1201220402212