61222210 has 64 divisors (see below), whose sum is σ = 131880960. Its totient is φ = 20021760.

The previous prime is 61222207. The next prime is 61222243. The reversal of 61222210 is 1222216.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192972 + ... + 193288.

It is an arithmetic number, because the mean of its divisors is an integer number (2060640).

Almost surely, 2^61222210 is an apocalyptic number.

61222210 is an abundant number, since it is smaller than the sum of its proper divisors (70658750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61222210 is a wasteful number, since it uses less digits than its factorization.

61222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 61222210 is about 7824.4622818440. The cubic root of 61222210 is about 394.1271330823.

Adding to 61222210 its reverse (1222216), we get a palindrome (62444426).

It can be divided in two parts, 612 and 22210, that added together give a palindrome (22822).

The spelling of 61222210 in words is "sixty-one million, two hundred twenty-two thousand, two hundred ten".