1220212200220 has 24 divisors (see below), whose sum is σ = 2759556822624. Its totient is φ = 450539889216.

The previous prime is 1220212200191. The next prime is 1220212200227. The reversal of 1220212200220 is 220022120221.

It is a junction number, because it is equal to n+sod(n) for n = 1220212200194 and 1220212200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212200227) 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, 2346561664 + ... + 2346562183.

It is an arithmetic number, because the mean of its divisors is an integer number (114981534276).

Almost surely, 2^{1220212200220} is an apocalyptic number.

1220212200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220212200220 is an abundant number, since it is smaller than the sum of its proper divisors (1539344622404).

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

1220212200220 is a wasteful number, since it uses less digits than its factorization.

1220212200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693123869 (or 4693123867 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220212200220 its reverse (220022120221), we get a palindrome (1440234320441).

The spelling of 1220212200220 in words is "one trillion, two hundred twenty billion, two hundred twelve million, two hundred thousand, two hundred twenty".