1220121000213 has 16 divisors (see below), whose sum is σ = 1670832792000. Its totient is φ = 791412564096.

The previous prime is 1220121000187. The next prime is 1220121000247. The reversal of 1220121000213 is 3120001210221.

It is not a de Polignac number, because 1220121000213 - 2⁹ = 1220120999701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220121000192 and 1220121000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220121000253) 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, 6755913 + ... + 6934161.

It is an arithmetic number, because the mean of its divisors is an integer number (104427049500).

Almost surely, 2^{1220121000213} is an apocalyptic number.

It is an amenable number.

1220121000213 is a deficient number, since it is larger than the sum of its proper divisors (450711791787).

1220121000213 is a wasteful number, since it uses less digits than its factorization.

1220121000213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239956.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1220121000213 its reverse (3120001210221), we get a palindrome (4340122210434).

The spelling of 1220121000213 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thirteen", and thus it is an aban number.