20210211128 has 32 divisors (see below), whose sum is σ = 39215070000. Its totient is φ = 9753112320.

The previous prime is 20210211121. The next prime is 20210211193. The reversal of 20210211128 is 82111201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210211121) 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, 693083 + ... + 721653.

Almost surely, 2^20210211128 is an apocalyptic number.

It is an amenable number.

20210211128 is a deficient number, since it is larger than the sum of its proper divisors (19004858872).

20210211128 is a wasteful number, since it uses less digits than its factorization.

20210211128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31655 (or 31651 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 20210211128 in words is "twenty billion, two hundred ten million, two hundred eleven thousand, one hundred twenty-eight".