20212132987 has 8 divisors (see below), whose sum is σ = 22009582800. Its totient is φ = 18488048544.

The previous prime is 20212132981. The next prime is 20212132999. The reversal of 20212132987 is 78923121202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212132987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212132981) 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, 18340768 + ... + 18341869.

It is an arithmetic number, because the mean of its divisors is an integer number (2751197850).

Almost surely, 2^20212132987 is an apocalyptic number.

20212132987 is a deficient number, since it is larger than the sum of its proper divisors (1797449813).

20212132987 is a wasteful number, since it uses less digits than its factorization.

20212132987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36682685.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 20212132987 in words is "twenty billion, two hundred twelve million, one hundred thirty-two thousand, nine hundred eighty-seven".