20121210202012 has 12 divisors (see below), whose sum is σ = 35212871365056. Its totient is φ = 10060389812000.

The previous prime is 20121210201943. The next prime is 20121210202021. The reversal of 20121210202012 is 21020201212102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53611873 + ... + 53985880.

It is an arithmetic number, because the mean of its divisors is an integer number (2934405947088).

Almost surely, 2^{20121210202012} is an apocalyptic number.

It is an amenable number.

20121210202012 is a deficient number, since it is larger than the sum of its proper divisors (15091661163044).

20121210202012 is a wasteful number, since it uses less digits than its factorization.

20121210202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107644508 (or 107644506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20121210202012 its reverse (21020201212102), we get a palindrome (41141411414114).

The spelling of 20121210202012 in words is "twenty trillion, one hundred twenty-one billion, two hundred ten million, two hundred two thousand, twelve".