20011211111002 has 16 divisors (see below), whose sum is σ = 30527164084320. Its totient is φ = 9835507392048.

The previous prime is 20011211110951. The next prime is 20011211111027. The reversal of 20011211111002 is 20011111211002.

It is a happy number.

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, 2127453 + ... + 6674464.

It is an arithmetic number, because the mean of its divisors is an integer number (1907947755270).

Almost surely, 2^{20011211111002} is an apocalyptic number.

20011211111002 is a deficient number, since it is larger than the sum of its proper divisors (10515952973318).

20011211111002 is a wasteful number, since it uses less digits than its factorization.

20011211111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821245.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20011211111002 its reverse (20011111211002), we get a palindrome (40022322322004).

The spelling of 20011211111002 in words is "twenty trillion, eleven billion, two hundred eleven million, one hundred eleven thousand, two".