102211145 has 16 divisors (see below), whose sum is σ = 124141440. Its totient is φ = 80784000.

The previous prime is 102211121. The next prime is 102211147. The reversal of 102211145 is 541112201.

102211145 = T₉₅ + T₉₆ + ... + T₈₄₉.

It is not a de Polignac number, because 102211145 - 2¹⁴ = 102194761 is a prime.

It is a super-2 number, since 2×102211145² = 20894236324422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102211147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249701 + ... + 250109.

It is an arithmetic number, because the mean of its divisors is an integer number (7758840).

Almost surely, 2^102211145 is an apocalyptic number.

It is an amenable number.

102211145 is a deficient number, since it is larger than the sum of its proper divisors (21930295).

102211145 is a wasteful number, since it uses less digits than its factorization.

102211145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 102211145 is about 10109.9527694248. The cubic root of 102211145 is about 467.5550489477. Note that the first 3 decimals are identical.

Adding to 102211145 its reverse (541112201), we get a palindrome (643323346).

It can be divided in two parts, 1022 and 11145, that added together give a cube (12167 = 23³).

The spelling of 102211145 in words is "one hundred two million, two hundred eleven thousand, one hundred forty-five".