2220121221037 has 2 divisors, whose sum is σ = 2220121221038. Its totient is φ = 2220121221036.

The previous prime is 2220121220987. The next prime is 2220121221103. The reversal of 2220121221037 is 7301221210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1625596950121 + 594524270916 = 1274989^2 + 771054^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220121221037 - 2¹⁹ = 2220120696749 is a prime.

It is a super-2 number, since 2×2220121221037² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220121224037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110060610518 + 1110060610519.

It is an arithmetic number, because the mean of its divisors is an integer number (1110060610519).

Almost surely, 2^{2220121221037} is an apocalyptic number.

It is an amenable number.

2220121221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220121221037 is an equidigital number, since it uses as much as digits as its factorization.

2220121221037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 2220121221037 its reverse (7301221210222), we get a palindrome (9521342431259).

The spelling of 2220121221037 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, thirty-seven".