1212212010220 has 24 divisors (see below), whose sum is σ = 2547713222208. Its totient is φ = 484490899200.

The previous prime is 1212212010203. The next prime is 1212212010241. The reversal of 1212212010220 is 220102122121.

It is a happy number.

It is a super-2 number, since 2×1212212010220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212212010194 and 1212212010203.

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, 24593821 + ... + 24643060.

It is an arithmetic number, because the mean of its divisors is an integer number (106154717592).

Almost surely, 2^{1212212010220} is an apocalyptic number.

1212212010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212212010220 is an abundant number, since it is smaller than the sum of its proper divisors (1335501211988).

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

1212212010220 is a wasteful number, since it uses less digits than its factorization.

1212212010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49238121 (or 49238119 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212212010220 its reverse (220102122121), we get a palindrome (1432314132341).

The spelling of 1212212010220 in words is "one trillion, two hundred twelve billion, two hundred twelve million, ten thousand, two hundred twenty".