1212022120101 has 32 divisors (see below), whose sum is σ = 1777830888960. Its totient is φ = 729800277504.

The previous prime is 1212022120079. The next prime is 1212022120121. The reversal of 1212022120101 is 1010212202121.

It is not a de Polignac number, because 1212022120101 - 2⁹ = 1212022119589 is a prime.

It is a super-2 number, since 2×1212022120101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212022120121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7117711 + ... + 7286003.

It is an arithmetic number, because the mean of its divisors is an integer number (55557215280).

Almost surely, 2^{1212022120101} is an apocalyptic number.

It is an amenable number.

1212022120101 is a deficient number, since it is larger than the sum of its proper divisors (565808768859).

1212022120101 is a wasteful number, since it uses less digits than its factorization.

1212022120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172285.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212022120101 its reverse (1010212202121), we get a palindrome (2222234322222).

The spelling of 1212022120101 in words is "one trillion, two hundred twelve billion, twenty-two million, one hundred twenty thousand, one hundred one".