1202211001220 has 48 divisors (see below), whose sum is σ = 2549865125808. Its totient is φ = 476081049600.

The previous prime is 1202211001183. The next prime is 1202211001253. The reversal of 1202211001220 is 221001122021.

It can be written as a sum of positive squares in 8 ways, for example, as 135964762756 + 1066246238464 = 368734^2 + 1032592^2 .

It is a super-2 number, since 2×1202211001220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202211001195 and 1202211001204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33176552 + ... + 33212768.

It is an arithmetic number, because the mean of its divisors is an integer number (53122190121).

Almost surely, 2^{1202211001220} is an apocalyptic number.

1202211001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202211001220 is an abundant number, since it is smaller than the sum of its proper divisors (1347654124588).

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

1202211001220 is a wasteful number, since it uses less digits than its factorization.

1202211001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52760 (or 52758 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1202211001220 its reverse (221001122021), we get a palindrome (1423212123241).

The spelling of 1202211001220 in words is "one trillion, two hundred two billion, two hundred eleven million, one thousand, two hundred twenty".