2011020221138 has 16 divisors (see below), whose sum is σ = 3040656879744. Its totient is φ = 997473481680.

The previous prime is 2011020221137. The next prime is 2011020221141. The reversal of 2011020221138 is 8311220201102.

It is not an unprimeable number, because it can be changed into a prime (2011020221137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662045 + ... + 2111952.

It is an arithmetic number, because the mean of its divisors is an integer number (190041054984).

Almost surely, 2^{2011020221138} is an apocalyptic number.

2011020221138 is a deficient number, since it is larger than the sum of its proper divisors (1029636658606).

2011020221138 is a wasteful number, since it uses less digits than its factorization.

2011020221138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776897.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 2011020221138 in words is "two trillion, eleven billion, twenty million, two hundred twenty-one thousand, one hundred thirty-eight".