10211521988 has 24 divisors (see below), whose sum is σ = 19160870400. Its totient is φ = 4744591488.

The previous prime is 10211521987. The next prime is 10211522161. The reversal of 10211521988 is 88912511201.

It is a super-2 number, since 2×10211521988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10211521987) 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, 945068 + ... + 955811.

It is an arithmetic number, because the mean of its divisors is an integer number (798369600).

Almost surely, 2^10211521988 is an apocalyptic number.

It is an amenable number.

10211521988 is a deficient number, since it is larger than the sum of its proper divisors (8949348412).

10211521988 is a wasteful number, since it uses less digits than its factorization.

10211521988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900979 (or 1900977 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 38.

The spelling of 10211521988 in words is "ten billion, two hundred eleven million, five hundred twenty-one thousand, nine hundred eighty-eight".