1220101121213 has 16 divisors (see below), whose sum is σ = 1391287254336. Its totient is φ = 1059966324480.

The previous prime is 1220101121209. The next prime is 1220101121231. The reversal of 1220101121213 is 3121211010221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220101121213 - 2² = 1220101121209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220101121191 and 1220101121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220101121203) 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, 10782218 + ... + 10894788.

It is an arithmetic number, because the mean of its divisors is an integer number (86955453396).

Almost surely, 2^{1220101121213} is an apocalyptic number.

1220101121213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1220101121213 is a deficient number, since it is larger than the sum of its proper divisors (171186133123).

1220101121213 is a wasteful number, since it uses less digits than its factorization.

1220101121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161644.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1220101121213 its reverse (3121211010221), we get a palindrome (4341312131434).

The spelling of 1220101121213 in words is "one trillion, two hundred twenty billion, one hundred one million, one hundred twenty-one thousand, two hundred thirteen".