2011211998 has 8 divisors (see below), whose sum is σ = 3029336640. Its totient is φ = 1001433120.

The previous prime is 2011211987. The next prime is 2011211999. The reversal of 2011211998 is 8991121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011211999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085838 + ... + 2086801.

It is an arithmetic number, because the mean of its divisors is an integer number (378667080).

Almost surely, 2^2011211998 is an apocalyptic number.

2011211998 is a deficient number, since it is larger than the sum of its proper divisors (1018124642).

2011211998 is a wasteful number, since it uses less digits than its factorization.

2011211998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172882.

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 2011211998 is about 44846.5383056485. The cubic root of 2011211998 is about 1262.2710360588.

The spelling of 2011211998 in words is "two billion, eleven million, two hundred eleven thousand, nine hundred ninety-eight".