211021000120987 has 32 divisors (see below), whose sum is σ = 242522708972544. Its totient is φ = 179861179881600.

The previous prime is 211021000120979. The next prime is 211021000121003. The reversal of 211021000120987 is 789021000120112.

It is not a de Polignac number, because 211021000120987 - 2³ = 211021000120979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211021000120187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6283923537 + ... + 6283957117.

It is an arithmetic number, because the mean of its divisors is an integer number (7578834655392).

Almost surely, 2^{211021000120987} is an apocalyptic number.

211021000120987 is a deficient number, since it is larger than the sum of its proper divisors (31501708851557).

211021000120987 is a wasteful number, since it uses less digits than its factorization.

211021000120987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40699.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 211021000120987 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty thousand, nine hundred eighty-seven".