2021216533516 has 24 divisors (see below), whose sum is σ = 3591393741936. Its totient is φ = 995116404480.

The previous prime is 2021216533459. The next prime is 2021216533601. The reversal of 2021216533516 is 6153356121202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890641 + ... + 2199016.

It is an arithmetic number, because the mean of its divisors is an integer number (149641405914).

Almost surely, 2^{2021216533516} is an apocalyptic number.

It is an amenable number.

2021216533516 is a deficient number, since it is larger than the sum of its proper divisors (1570177208420).

2021216533516 is a wasteful number, since it uses less digits than its factorization.

2021216533516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092169 (or 3092167 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 2021216533516 in words is "two trillion, twenty-one billion, two hundred sixteen million, five hundred thirty-three thousand, five hundred sixteen".