20012011211212 has 24 divisors (see below), whose sum is σ = 35216011408032. Its totient is φ = 9950298393600.

The previous prime is 20012011211063. The next prime is 20012011211237. The reversal of 20012011211212 is 21211211021002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16705137 + ... + 17862967.

It is an arithmetic number, because the mean of its divisors is an integer number (1467333808668).

Almost surely, 2^{20012011211212} is an apocalyptic number.

It is an amenable number.

20012011211212 is a deficient number, since it is larger than the sum of its proper divisors (15204000196820).

20012011211212 is a wasteful number, since it uses less digits than its factorization.

20012011211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181889 (or 1181887 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20012011211212 its reverse (21211211021002), we get a palindrome (41223222232214).

The spelling of 20012011211212 in words is "twenty trillion, twelve billion, eleven million, two hundred eleven thousand, two hundred twelve".